Top Compliance Auditors in Japan

BDO is the fifth-largest professional services network globally, providing audit, tax, and advisory services through member firms in over 160 countries.

BDO Japan is a mid-market audit and advisory firm providing ISO 27001, SOC 2, APPI, and P-Mark compliance services to mid-market companies and foreign-invested businesses operating in Japan.

BSI Group is the world's first national standards body and largest ISO certification body, offering ISO 27001, ISO 27701, SOC 2, and Cyber Essentials audits globally.

BSI Group is the world's leading standards and certification body, providing ISO 27001, ISO 22301, and other management system certifications globally.

Bureau Veritas is a world-leading testing, inspection, and certification company providing ISO 27001 and management system certifications in 140+ countries.

Deloitte is the world's largest professional services firm, offering audit, assurance, tax, and advisory services across 150+ countries worldwide.

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.

DNV is a global assurance and risk management company providing ISO 27001, ISO 22301, and management system certifications across 100+ countries worldwide.

EY is a Big Four professional services firm providing audit, assurance, tax, consulting, and strategy services across more than 150 countries worldwide.

EY Japan (EY ShinNihon) provides Big Four audit, assurance, and advisory services with expertise in J-SOX, ISMAP, and Japanese regulatory compliance.

Grant Thornton is a leading global professional services network providing audit, tax, and advisory services through member firms in over 140 countries.

Intertek is a global quality assurance provider offering ISO 27001, ISO 22301, and management system certifications through operations in 100+ countries.

JISC/JAB is Japan's national accreditation body for ISO certification bodies, ensuring ISO 27001 and management system certifications meet international standards.

JQS is a Japanese accredited certification body specializing in ISO 27001 and quality management system certifications for Japanese organizations.

KPMG is a Big Four professional services firm providing audit, tax, and advisory services through a global network spanning 143 countries and territories.

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.

Kroll is a global risk and financial advisory firm providing cybersecurity, compliance, and investigation services with deep expertise in digital forensics.

LRQA is a global assurance and certification provider specializing in ISO 27001, ISO 22301, cybersecurity, and management system certifications worldwide.

PwC is one of the Big Four professional services firms, providing audit, assurance, tax, and consulting services to major organizations in 152 countries.

Protiviti is a global consulting firm specializing in internal audit, risk management, and compliance with 9,000+ professionals across 25+ countries.

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.

SGS is the world's largest testing, inspection, and certification company, providing ISO 27001 and management system certifications across 140+ countries.

TCS is India's largest IT services company offering cybersecurity, compliance audit, and risk advisory services to enterprises across 46 countries worldwide.

TUV Rheinland is a world-leading German certification and testing body providing ISO 27001, TISAX, and management system certifications across 60+ countries.

TUV SUD is a leading German testing, inspection, and certification body providing ISO 27001, TISAX, and management system certifications across 50+ countries.