Auditor Directory
Top Compliance Auditors in Germany
About Germany Auditors
52 compliance audit firms with offices or operations in Germany. The list below covers the major frameworks assessed locally, the dominant firm sizes, and where the firms are concentrated. Use the filters to narrow by framework, firm size, or budget.
Frameworks most audited in Germany
Firm size mix
- Big 4
- 6
- Large (500+ staff)
- 39
- Mid-size (51–500)
- 3
- Boutique (≤50)
- 4
Top cities
- London
- 13
- Paris
- 9
- Frankfurt
- 3
- Stuttgart
- 2
- Berlin
- 2
How to choose a Germany auditor
- Scope match: confirm the firm has signed off audits for the framework you need in the last 12 months.
- Local presence: on-site evidence collection and interviews are faster when the auditor has staff in your city.
- Three quotes: for identical scopes, pricing can vary two to three times across the firms listed here.
- References: ask for one reference customer in your industry and company stage.
Top Compliance Auditors in Germany is one of many regions in the global auditor directory. To find auditors by framework, see the framework-based directory.
52 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 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.
BSI Group
London, United Kingdom
BSI Group is the world's leading standards and certification body, providing ISO 27001, ISO 22301, and other management system certifications globally.
Bureau Veritas
Paris, France
Bureau Veritas is a world-leading testing, inspection, and certification company providing ISO 27001 and management system certifications in 140+ countries.
CGI Cybersecurity
Paris, France
CGI Cybersecurity offers enterprise-grade compliance services across ISO 27001, SOC 2, NIS2, and more.
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.
DNV
Oslo, Norway
DNV is a global assurance and risk management company providing ISO 27001, ISO 22301, and management system certifications across 100+ countries worldwide.
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 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.
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.
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.
LRQA
London, United Kingdom
LRQA is a global assurance and certification provider specializing in ISO 27001, ISO 22301, cybersecurity, and management system certifications worldwide.
Mandiant Germany
Munich, Germany
Mandiant Germany offers ISO 27001, BSI C5, and NIS2 compliance for enterprise clients.
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 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.
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.
SGS
Geneva, Switzerland
SGS is the world's largest testing, inspection, and certification company, providing ISO 27001 and management system certifications across 140+ countries.
Sogeti Cybersecurity
Paris, France
Sogeti Cybersecurity is a Capgemini subsidiary offering enterprise-grade compliance services across Europe.
TUV Rheinland
Cologne, Germany
TUV Rheinland is a world-leading German certification and testing body providing ISO 27001, TISAX, and management system certifications across 60+ countries.
TUV SUD
Munich, Germany
TUV SUD is a leading German testing, inspection, and certification body providing ISO 27001, TISAX, and management system certifications across 50+ countries.
Wavestone
Paris, France
Wavestone is a French management and technology consultancy offering ISO 27001, NIS2, and GDPR compliance.
WithSecure
Helsinki, Finland
WithSecure (formerly F-Secure Business) is a Finnish cybersecurity firm offering ISO 27001 and NIS2 compliance.
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.
cirosec GmbH
Heilbronn, Germany
cirosec is a German cybersecurity firm specializing in ISO 27001, BSI C5, and TISAX assessments.
Claranet Cyber Security
London, United Kingdom
Claranet Cyber Security offers ISO 27001, PCI DSS, and Cyber Essentials assessments across Europe.
Compass Security
Rapperswil, Switzerland
Compass Security is a Swiss cybersecurity firm offering ISO 27001, SOC 2, and penetration testing services.
DEKRA
Stuttgart, Germany
DEKRA is one of the world's largest testing, inspection, and certification organizations offering ISO 27001, ISO 27701, and management system certifications globally.
DIN CERTCO
Berlin, Germany
DIN CERTCO is a German DAkkS-accredited ISO certification body offering ISO 27001, ISO 27701, and management system certifications for European organizations.
DQS
Frankfurt, Germany
DQS is a German-headquartered global certification body offering ISO 27001, TISAX, ISO 27701, and management system audits across 60+ countries.
Eurofins Assurance
Paris, France
Eurofins Assurance is the certification division of the Eurofins Group, offering ISO 27001 and management system audits across Europe with multi-country accreditation.
genua GmbH
Kirchheim, Germany
genua is a German IT security company offering ISO 27001 and BSI C5 compliance assessments.
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.
Intertek
London, United Kingdom
Intertek is a global quality assurance provider offering ISO 27001, ISO 22301, and management system certifications through operations in 100+ countries.
Kiwa
Rijswijk, Netherlands
Kiwa is a Netherlands-based global testing, inspection, and certification body offering ISO 27001, ISO 27701, and management system certifications across Europe.
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.
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.
Orange Cyberdefense
Paris, France
Orange Cyberdefense is a major European cybersecurity firm offering ISO 27001, NIS2, SOC 2, and GDPR compliance services with managed security operations across the continent.
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.
RINA
Genoa, Italy
RINA is an Italian multinational inspection, certification, and engineering consultancy offering ISO 27001, ISO 27701, and management system certifications globally.
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 Germany
Dusseldorf, Germany
RSM Germany provides SOC, ISO 27001, and BSI C5 compliance audits.
Schellman (EU Office)
Frankfurt, Germany
Schellman EU is the European office of Schellman & Company, providing SOC 2, ISO 27001, GDPR, and C5 compliance audits for European technology companies.
SEC Consult
Vienna, Austria
SEC Consult is an Austrian cybersecurity consultancy offering ISO 27001, SOC 2, and NIS2 compliance assessments.
SECUINFRA GmbH
Berlin, Germany
SECUINFRA is a Berlin-based cybersecurity firm offering ISO 27001, BSI C5, and TISAX assessments.
SOCOTEC
Paris, France
SOCOTEC is a major French certification body offering ISO 27001 and multi-standard certifications across Europe. Profile includes pricing and framework coverage.
TUV Nord
Hanover, Germany
TUV Nord is a German certification body providing ISO 27001, TISAX, and management system certifications with strong European and Asian market presence.