Auditor Directory
SOX Auditors
Sarbanes-Oxley Act of 2002
Browse accredited firms offering SOX audits. Filter by location, size, and budget.
124 firms — interactive filtering loads below.
Atos Cybersecurity
Paris, France
Atos Cybersecurity is a global IT services company offering enterprise-grade ISO 27001, SOC 2, and NIS2 compliance.
Baker Tilly
Chicago, Illinois
Baker Tilly is a top-10 global advisory CPA firm network with 43,000+ professionals in 141 countries, serving mid-market and growth companies.
BDO Canada
Toronto, ON
BDO Canada is a leading national CPA firm offering SOC, SOX, ISO 27001, and PIPEDA compliance audits.
BDO International
Brussels, Belgium
BDO is the fifth-largest professional services network globally, providing audit, tax, and advisory services through member firms in over 160 countries.
CGI Cybersecurity
Paris, France
CGI Cybersecurity offers enterprise-grade compliance services across ISO 27001, SOC 2, NIS2, and more.
Citrin Cooperman
New York, NY
Citrin Cooperman is a Top 25 CPA firm offering comprehensive SOC, SOX, HIPAA, and ISO 27001 audit services.
CliftonLarsonAllen
Minneapolis, MN
CliftonLarsonAllen is a Top 10 CPA firm offering SOC, SOX, HIPAA, FedRAMP, and ISO 27001 audits.
CohnReznick Advisory
New York, NY
CohnReznick Advisory is a Top 25 CPA firm offering SOC, SOX, and FedRAMP compliance audits.
Crowe Global
New York, United States
Crowe Global is a top-10 global accounting network providing audit, tax, and advisory services through member firms in over 145 countries worldwide.
Deloitte
London, United Kingdom
Deloitte is the world's largest professional services firm, offering audit, assurance, tax, and advisory services across 150+ countries worldwide.
Deloitte Australia
Sydney, Australia
Deloitte Australia is a Big Four professional services firm providing SOC 2, ISO 27001, IRAP, Essential Eight, and enterprise risk advisory services to Australia's largest organizations across government, financial services, and technology.
Deloitte Canada
Toronto, Canada
Deloitte Canada is the country's largest Big Four professional services firm, providing SOC 2, ISO 27001, PIPEDA, SOX, and enterprise risk advisory services across financial services, technology, energy, and government sectors.
Deloitte India
Mumbai, India
Deloitte India is a Big Four professional services firm providing SOC 2, ISO 27001, DPDPA, SOX, and comprehensive risk advisory services to India's largest corporations and multinational subsidiaries.
Deloitte Middle East
Dubai, UAE
Deloitte Middle East is the region's largest professional services firm, providing Big Four audit, assurance, and advisory services across the MENA region.
Deloitte Singapore
Singapore
Deloitte Singapore is a Big Four professional services firm providing SOC 2, ISO 27001, PDPA, MTCS, and enterprise risk advisory services to major corporations and government agencies across Singapore and Southeast Asia.
Deloitte Tohmatsu
Tokyo, Japan
Deloitte Tohmatsu is Deloitte's Japanese member firm and one of Japan's largest audit firms, providing Big Four services including J-SOX and ISMAP compliance.
Eide Bailly
Fargo, ND
Eide Bailly is a Top 25 CPA firm offering SOC, SOX, HIPAA, and ISO 27001 audit services.
Ernst & Young (EY)
London, United Kingdom
EY is a Big Four professional services firm providing audit, assurance, tax, consulting, and strategy services across more than 150 countries worldwide.
EY Australia
Sydney, Australia
EY Australia is a Big Four professional services firm providing SOC 2, ISO 27001, IRAP, Essential Eight, and enterprise risk advisory services across financial services, technology, and government sectors in Australia.
EY France
Paris, France
EY France is a Big Four professional services firm providing ISO 27001, GDPR, HDS, SOC 2, and enterprise risk advisory services to French enterprises across financial services, technology, and manufacturing.
EY Germany
Stuttgart, Germany
EY Germany is a Big Four professional services firm providing ISO 27001, C5, TISAX, SOC 2, and GDPR compliance services to German enterprises, automotive companies, and financial institutions.
EY India
Mumbai, India
EY India is the largest Big Four operation in India by headcount, providing SOC 2, ISO 27001, DPDPA, SOX, and comprehensive risk advisory services across all major industries.
EY Japan
Tokyo, Japan
EY Japan (EY ShinNihon) provides Big Four audit, assurance, and advisory services with expertise in J-SOX, ISMAP, and Japanese regulatory compliance.
EY MENA
Dubai, UAE
EY MENA provides Big Four audit, assurance, tax, and advisory services across the Middle East and North Africa with offices in 15+ MENA countries.
EY Singapore
Singapore
EY Singapore provides Big Four audit, assurance, and advisory services with strong cybersecurity and regulatory compliance capabilities for the ASEAN market.
Forvis Mazars (US)
Springfield, Missouri
Forvis Mazars is a top-10 US professional services firm formed from the merger of BKD and Dixon Hughes Goodman, now part of the Mazars global network.
Grant Thornton
London, United Kingdom
Grant Thornton is a leading global professional services network providing audit, tax, and advisory services through member firms in over 140 countries.
HCLTech Cybersecurity
Noida, India
HCLTech Cybersecurity provides enterprise compliance services across ISO 27001, SOC, PCI DSS, and NIST.
KPMG
Amstelveen, Netherlands
KPMG is a Big Four professional services firm providing audit, tax, and advisory services through a global network spanning 143 countries and territories.
KPMG Australia
Sydney, Australia
KPMG Australia provides Big Four audit, assurance, and cybersecurity services with deep expertise in APRA, CPS 234, and Australian regulatory compliance.
KPMG AZSA LLC
Tokyo, Japan
KPMG AZSA (KPMG Japan) is a Big Four audit firm providing SOC 2, ISO 27001, APPI, ISMAP, and enterprise risk advisory services to Japan's largest corporations across technology, manufacturing, and financial services.
KPMG Canada
Toronto, Canada
KPMG Canada is a Big Four professional services firm providing SOC 2, ISO 27001, PIPEDA, SOX, and enterprise risk advisory services to Canadian organizations across financial services, technology, energy, and government.
KPMG China
Beijing, China
KPMG China is one of China's largest Big Four firms, providing audit, assurance, and advisory services with expertise in Chinese regulatory compliance.
KPMG India
Mumbai, India
KPMG India is a Big Four professional services firm providing SOC 2, ISO 27001, DPDPA, and enterprise risk advisory services to India's largest organizations across financial services, technology, and government sectors.
KPMG Lower Gulf
Dubai, UAE
KPMG Lower Gulf is KPMG's UAE and Oman practice, providing Big Four audit, assurance, tax, and advisory services across the Gulf region.
KPMG Singapore
Singapore
KPMG Singapore is KPMG's ASEAN hub, providing Big Four audit, assurance, tax, and advisory services with strong regulatory and compliance expertise.
Kroll (UK)
London, United Kingdom
Kroll UK is a global risk advisory firm offering ISO 27001, SOC 2, PCI DSS, and enterprise-grade compliance assessments.
Mazars
Paris, France
Mazars is an international audit, tax, and advisory firm operating as an integrated partnership across 95+ countries with 47,000+ professionals.
PricewaterhouseCoopers (PwC)
London, United Kingdom
PwC is one of the Big Four professional services firms, providing audit, assurance, tax, and consulting services to major organizations in 152 countries.
Protiviti
Menlo Park, California
Protiviti is a global consulting firm specializing in internal audit, risk management, and compliance with 9,000+ professionals across 25+ countries.
PwC Aarata LLC
Tokyo, Japan
PwC Aarata (PwC Japan) is a Big Four audit firm providing SOC 2, ISO 27001, APPI, ISMAP, and enterprise risk advisory services to Japan's leading corporations across financial services, technology, and manufacturing.
PwC Australia
Sydney, Australia
PwC Australia is one of Australia's largest professional services firms, providing Big Four audit, assurance, and cybersecurity services across Oceania.
PwC Canada
Toronto, Canada
PwC Canada is a Big Four professional services firm providing SOC 2, ISO 27001, PIPEDA, SOX, and enterprise risk advisory services to Canada's largest organizations across financial services, technology, energy, and government.
PwC China
Shanghai, China
PwC China is the largest Big Four firm in China, providing audit, assurance, and advisory services with deep expertise in Chinese regulatory compliance.
PwC France
Paris, France
PwC France is a Big Four professional services firm providing ISO 27001, GDPR, HDS, SOC 2, and enterprise risk advisory services to French enterprises across financial services, technology, healthcare, and government.
PwC Germany
Frankfurt, Germany
PwC Germany is a Big Four professional services firm providing ISO 27001, C5, TISAX, SOC 2, and GDPR compliance services to German enterprises across automotive, manufacturing, technology, and financial services.
PwC India
Mumbai, India
PwC India is a Big Four professional services firm providing SOC 2, ISO 27001, DPDPA, SOX, and enterprise risk advisory services to India's largest corporations and multinational subsidiaries.
PwC Middle East
Dubai, UAE
PwC Middle East is a Big Four professional services firm providing SOC 2, ISO 27001, NESA, PDPL, and enterprise risk advisory services across the UAE, Saudi Arabia, and the broader Middle East region.
PwC Singapore
Singapore
PwC Singapore is a Big Four professional services firm providing SOC 2, ISO 27001, PDPA, MTCS, and enterprise risk advisory services to financial institutions, technology companies, and government agencies in Singapore and the APAC region.
Reply Cyber Security
Turin, Italy
Reply Cyber Security is a European IT consultancy offering ISO 27001, SOC 2, and NIS2 compliance for enterprises.
RSM International
London, United Kingdom
RSM International is the sixth-largest global professional services network, delivering audit, tax, and consulting services across 120+ countries.
secunet Security Networks
Essen, Germany
secunet is Germany's leading IT security company offering ISO 27001, BSI C5, and NIS2 compliance for enterprises.
Sogeti Cybersecurity
Paris, France
Sogeti Cybersecurity is a Capgemini subsidiary offering enterprise-grade compliance services across Europe.
TCS Cybersecurity
Mumbai, India
TCS Cybersecurity provides enterprise-grade compliance services across SOC, ISO 27001, PCI DSS, and more.
Wipro Cybersecurity
Bangalore, India
Wipro Cybersecurity offers enterprise-grade compliance services across ISO 27001, SOC, and PCI DSS.
Alvarez & Marsal
New York, NY
Alvarez & Marsal is a global professional services firm founded in 1983 in New York, offering cyber risk, resilience, and compliance advisory services.
Aprio
Atlanta, Georgia
Aprio is a top-25 US CPA and advisory firm offering SOC 2, ISO 27001, HITRUST, and cybersecurity assessments with strong technology sector expertise.
Armanino
San Ramon, California
Armanino is a top-25 US CPA firm based in California with strong technology sector focus, offering SOC 2, ISO 27001, and cybersecurity assessments.
Aronson LLC
Rockville, MD
Aronson LLC is a Maryland CPA firm offering SOC, SOX, and FedRAMP compliance audits for government contractors.
BDO France
Paris, France
BDO France offers SOC, ISO 27001, and GDPR compliance audit services.
BDO Germany
Hamburg, Germany
BDO Germany is a leading mid-market audit and advisory firm providing ISO 27001, C5, TISAX, SOC 2, and GDPR compliance services to German mid-market companies and the Mittelstand.
BDO India
Mumbai, India
BDO India provides SOC, ISO 27001, and DPDPA compliance audit services.
BDO Ireland
Dublin, Ireland
BDO Ireland offers SOC, ISO 27001, and GDPR compliance audit services.
BDO UK LLP
London, United Kingdom
BDO UK is one of the UK's largest accountancy and business advisory firms, providing SOC 2, ISO 27001, GDPR, and Cyber Essentials audit services to mid-market and enterprise organizations.
BKM Sowan Horan
Dallas, TX
BKM Sowan Horan is a Dallas CPA firm offering SOC, SOX, and HIPAA compliance audits.
BSR & Co (KPMG India affiliate)
Mumbai, India
BSR & Co is KPMG's affiliate firm in India, providing audit, assurance, tax, and advisory services with Big Four methodology to Indian enterprises.
Carr Riggs & Ingram
Enterprise, AL
Carr Riggs & Ingram is a Top 25 CPA firm offering SOC, SOX, and HIPAA compliance audits.
CBIZ
Cleveland, Ohio
CBIZ is a leading US business services company offering audit, tax, insurance, and advisory services through 100+ offices across the United States.
Centri Business Consulting
Philadelphia, PA
Centri Business Consulting is a Philadelphia-based advisory firm providing SOC 1/SOC 2 reporting, ISO 27001, and SOX internal-controls services.
Cherry Bekaert
Richmond, Virginia
Cherry Bekaert is a top-25 US CPA firm providing audit, tax, and advisory services with strong presence in the Southeast and growing national coverage.
Clark Nuber
Bellevue, WA
Clark Nuber is a Bellevue CPA firm offering SOC, SOX, and HIPAA compliance audits.
CohnReznick LLP
New York, NY
CohnReznick is a top-20 US accounting firm providing SOC 2, ISO 27001, HIPAA, and financial audit services to mid-market and enterprise clients across technology, financial services, and healthcare.
CrossCountry Consulting
McLean, VA
CrossCountry Consulting is a McLean, VA business advisory firm founded in 2011, offering SOC 1/SOC 2 readiness, SOX, and risk advisory services.
EisnerAmper
New York, New York
EisnerAmper is a top-20 US accounting and advisory firm offering audit, tax, and cybersecurity services with strong presence in the Northeast and nationally.
Elliott Davis
Greenville, SC
Elliott Davis is a Top 40 CPA firm offering SOC, SOX, and HIPAA compliance audits.
Frazier & Deeter
Atlanta, GA
Frazier & Deeter is a Top 75 CPA firm in Atlanta offering comprehensive compliance audit services.
Freed Maxick
Buffalo, NY
Freed Maxick is a regional CPA firm in Buffalo offering SOC, SOX, and HIPAA compliance audits.
Grant Thornton Bharat
New Delhi, India
Grant Thornton Bharat is one of India's largest professional services firms, offering audit, tax, and advisory services including cybersecurity and compliance.
Grant Thornton Netherlands
Amsterdam, Netherlands
Grant Thornton Netherlands provides SOC, ISO 27001, and GDPR compliance audit services.
Grant Thornton UK LLP
London, United Kingdom
Grant Thornton UK is a major mid-tier audit and advisory firm providing SOC 2, ISO 27001, GDPR, and financial audit services to UK businesses from startups to listed companies.
Grassi Advisors & Accountants
New York, NY
Grassi is a Top 100 CPA firm in New York offering SOC, SOX, and HIPAA audit services.
HBS Group
Memphis, TN
HBS Group is a Memphis CPA firm offering SOC, SOX, and HIPAA compliance audits.
Hein & Associates
Denver, CO
Hein & Associates is a Denver CPA firm offering SOC and SOX compliance audit services.
HLB International
London, United Kingdom
HLB International is a global advisory and accounting network with 40,000+ professionals in member firms spanning 156 countries and territories.
K Financial (K-CPA)
Louisville, CO
K Financial (K-CPA) is a Colorado CPA firm specializing in SOC 1 and SOC 2 reporting, employee benefit plan audits, and SOX internal audit support.
Kaufman Rossin
Miami, FL
Kaufman Rossin is a Top 100 CPA firm in Miami serving technology, healthcare, and real estate clients with SOC 2, HIPAA, and SOX audits.
KSM (Katz, Sapper & Miller)
Indianapolis, Indiana
KSM (Katz, Sapper & Miller) is a top-50 US CPA firm based in Indianapolis providing audit, tax, and IT risk advisory services to mid-market clients.
MaloneBailey LLP
Houston, TX
MaloneBailey LLP is a Houston-based CPA firm offering SOC and SOX audit services with expertise in energy and technology.
Marcum LLP
New York, NY
Marcum LLP is a top-15 US national accounting and advisory firm providing SOC 2, ISO 27001, HIPAA, and financial audit services to mid-market organizations.
Marcum Technology
New York, NY
Marcum Technology is a Top 15 CPA firm offering SOC, SOX, and HIPAA compliance audit services.
Mayer Hoffman McCann
Kansas City, MO
Mayer Hoffman McCann is a CPA firm offering SOC and SOX compliance audits.
Mazars France
Paris, France
Mazars France is the home practice of the Forvis Mazars network, providing ISO 27001, GDPR, HDS, and SOC 2 compliance services to French mid-market companies and enterprises at competitive pricing.
Mazars India
Gurugram, India
Mazars India provides SOC, ISO 27001, and SOX compliance audit services.
Mazars Ireland
Dublin, Ireland
Mazars Ireland is a leading Irish audit firm offering SOC 2, ISO 27001, and GDPR compliance assessments.
Mazars Middle East
Dubai, UAE
Mazars Middle East is a mid-market audit and advisory firm providing ISO 27001, SOC 2, NESA, and PDPL compliance services across the UAE, Saudi Arabia, and Qatar.
Mazars UK
London, United Kingdom
Mazars UK is a leading mid-market audit and advisory firm providing ISO 27001, SOC 2, GDPR, and Cyber Essentials compliance services to UK businesses across financial services, technology, and the public sector.
Moore Global
London, United Kingdom
Moore Global is a top-15 international accounting and advisory network with 34,000+ professionals serving clients across 110+ countries worldwide.
Moss Adams
Seattle, Washington
Moss Adams is one of the largest US CPA firms, providing audit, tax, and consulting services from 30+ offices primarily across the Western United States.
Nangia Andersen
New Delhi, India
Nangia Andersen is a leading Indian professional services firm and Andersen Global member, providing audit, tax, and compliance services across India.
Nexia International
London, United Kingdom
Nexia International is a global network of independent accounting and consulting firms with 39,000+ professionals across 125+ countries worldwide.
PKF International
London, United Kingdom
PKF International is a global network of independent accounting and advisory firms with 22,000+ professionals across 150+ countries worldwide.
PKF Littlejohn LLP
London, United Kingdom
PKF Littlejohn is a London-based mid-market accountancy firm providing SOC 2, ISO 27001, GDPR, and Cyber Essentials audit services to growing UK businesses.
Plante Moran
Southfield, Michigan
Plante Moran is a top-15 US CPA firm known for exceptional workplace culture, providing audit, tax, and cybersecurity services to mid-market companies.
Prager Metis
New York, NY
Prager Metis is a Top 100 CPA firm offering SOC, SOX, and HIPAA compliance audits.
Raymond Chabot Grant Thornton
Montreal, QC
Raymond Chabot Grant Thornton is one of Quebec's largest CPA firms offering SOC, SOX, and PIPEDA audits.
RBSM LLP
New York, NY
RBSM LLP is a New York CPA firm providing SOC 2, SOC 1, and SOX compliance audits.
Rehmann Advisors
Troy, MI
Rehmann Advisors is a Michigan-based Top 50 CPA firm offering SOC, SOX, and HIPAA audits.
Richter (Canada)
Montreal, QC
Richter is a leading Canadian CPA firm offering SOC, SOX, and PIPEDA compliance audits.
Roedl & Partner
Nuremberg, Germany
Roedl & Partner is a German mid-market professional services firm providing ISO 27001, TISAX, C5, and GDPR compliance services to the Mittelstand and international businesses with German operations.
RSM France
Paris, France
RSM France provides SOC, ISO 27001, and GDPR compliance audit services.
RSM Germany
Dusseldorf, Germany
RSM Germany provides SOC, ISO 27001, and BSI C5 compliance audits.
RSM India
Mumbai, India
RSM India provides SOC, ISO 27001, and SOX compliance audit services.
RSM Netherlands
Amsterdam, Netherlands
RSM Netherlands offers SOC, ISO 27001, and GDPR compliance audit services.
Sax LLP
Parsippany, NJ
Sax LLP is a New Jersey-based Top 100 CPA firm offering SOC, SOX, and HIPAA audit services.
Schneider Downs
Pittsburgh, PA
Schneider Downs is a Pittsburgh-based Top 60 CPA firm offering SOC, SOX, and HIPAA compliance audits.
Sikich
Naperville, Illinois
Sikich is a top-30 US professional services firm offering audit, technology, and cybersecurity services with strong Midwest presence and CMMC capabilities.
SNG Grant Thornton
Johannesburg, South Africa
SNG Grant Thornton is a South African CPA firm offering SOC, ISO 27001, and POPIA compliance audits.
StoneTurn
New York, NY
StoneTurn is a New York-based advisory firm founded in 2004, now part of Province, offering compliance, risk controls, and forensic services.
Warren Averett
Birmingham, Alabama
Warren Averett is a top-50 US CPA firm based in Alabama providing audit, tax, and cybersecurity advisory services across the Southeastern United States.
Weinberg & Company
Los Angeles, CA
Weinberg & Company is an LA-based CPA firm specializing in SOC 2, SOC 1, and SOX audits for technology companies.