Company lists · Data refreshed September 2026

Top 25 Compliance and IT audit firms worldwide

Name: Compliance and IT audit firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 8,397 companies tracked

RevenueBase identified 8,397 compliance and IT audit firms worldwide as of September 2026 and tracks 75,360 professional contacts across them, including 21,411 with verified work emails. The United States is the largest market and London the largest hub.

This list covers compliance and IT audit firms worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026. Country and city lists for compliance and IT audit firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

8,397Companies

75,360Contacts tracked

21,411Verified emails

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The 25 largest compliance and IT audit firms worldwide

Ranked by team size

Top 25 of 8,397 compliance and IT audit firms worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to compliance and IT audit firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Aparajitha Corporate Services Private Limited	Partial evidence	Madurai, IndiaHQ checked Sep 19, 2026	1,001-5,000	2,064 contacts →
	Partial evidence “Aparajitha: Revolutionising India's Regulatory Compliance Space With 25 years of experience, Aparajitha covers compliance for over establishments, factories, and 52 lakh contract…” Source: RevenueBase Database · checked Sep 19, 2026
2	Sikich	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,688 contacts →
	Partial evidence “Sikich offers the public and private sectors a diverse platform of professional services across consulting, technology, and compliance.” Source: RevenueBase Database · checked Sep 19, 2026
3	RSM Ebner Stolz	Indirect evidence	Stuttgart, GermanyHQ checked Sep 19, 2026	1,001-5,000	1,442 contacts →
	Indirect evidence “Wollen Sie jemanden, der Sie auch beim Sprung in neue Märkte und bei allen anstehenden Herausforderungen begleitet?” Source: RevenueBase Database · checked Sep 19, 2026
4	Matrix Business Services India Private Limited	Partial evidence	Chennai, IndiaHQ checked Sep 19, 2026	1,001-5,000	1,199 contacts →
	Partial evidence “Matrix is a passionate team of professionals providing People, Product, and Process assurance services for enterprises across different industry segments for better compliance and…” Source: RevenueBase Database · checked Sep 19, 2026
5	A-Lign	Partial evidence	Tampa, FL, United StatesHQ checked Sep 19, 2026	501-1,000	798 contacts →
	Partial evidence “A-LIGN is the leading provider of high-quality, efficient cybersecurity compliance programs.” Source: RevenueBase Database · checked Sep 19, 2026
6	Sharp & Tannan Group	Indirect evidence	Mumbai, IndiaHQ checked Sep 19, 2026	501-1,000	601 contacts →
	Indirect evidence “Founded in 1934, by two gentlemen to whom integrity was paramount, Mr.” Source: RevenueBase Database · checked Sep 19, 2026
7	Schellman	Partial evidence	Tampa, FL, United StatesHQ checked Sep 19, 2026	501-1,000	516 contacts →
	Partial evidence “Schellman is a leading provider of attestation and compliance services.” Source: RevenueBase Database · checked Sep 19, 2026
8	Datatracks	Strong evidence	SingaporeHQ checked Sep 19, 2026	201-500	475 contacts →
	Strong evidence “Compliance isn’t about reporting data - it’s the foundation of trust, transparency, and resilience in business.” Source: RevenueBase Database · checked Sep 19, 2026
9	Mahajan & Aibara	Partial evidence	Mumbai, IndiaHQ checked Sep 19, 2026	201-500	458 contacts →
	Partial evidence “We offer Internal Audit & Risk Consulting related services.” Source: RevenueBase Database · checked Sep 19, 2026
10	ACS	Indirect evidence	Pune, IndiaHQ checked Sep 19, 2026	1,001-5,000	420 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
11	Controlcase	Strong evidence	Fairfax, VA, United StatesHQ checked Sep 19, 2026	201-500	411 contacts →
	Strong evidence “ControlCase is committed to bringing peace of mind to the world’s IT compliance programs through our signature partnership approach, commitment to automation, and cost-effective…” Source: RevenueBase Database · checked Sep 19, 2026
12	APA Engineering INC	Strong evidence	Mount Laurel, NJ, United StatesHQ checked Sep 19, 2026	201-500	364 contacts →
	Strong evidence “APA Engineering Inc has been a leader in providing Compliance, Engineering, IT, and Sourcing services since With over twenty years in business, we are dedicated to providing the…” Source: RevenueBase Database · checked Sep 19, 2026
13	Esec Forte Technologies	Partial evidence	Gurugram, IndiaHQ checked Sep 19, 2026	201-500	363 contacts →
	Partial evidence “eSec Forte® Technologies is a CMMi Level 3 certified Global Consulting and IT Security Services company with offerings across Cloud Security, Cyber Forensics, Malware Detection…” Source: RevenueBase Database · checked Sep 19, 2026
14	Bm&a	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	201-500	345 contacts →
	Partial evidence “Based in Paris, Lyon, Rennes, Le Havre, Toulouse, Aix en Provence, Casablanca, London and New York, BM & A is an independent and international group positioned on the audit and…” Source: RevenueBase Database · checked Sep 19, 2026
15	Advisense	Partial evidence	Stockholm, SwedenHQ checked Sep 19, 2026	201-500	321 contacts →
	Partial evidence “Advisense is a leading governance, risk and compliance powerhouse, offering best-in-class services and tech solutions to the European industry.” Source: RevenueBase Database · checked Sep 19, 2026
16	Comply	Partial evidence	New York City, NY, United StatesHQ checked Sep 19, 2026	201-500	308 contacts →
	Partial evidence “At Comply, we pride ourselves on being the champion for compliance professionals.” Source: RevenueBase Database · checked Sep 19, 2026
17	MCO Mycomplianceoffice	Strong evidence	New York, NY, United StatesHQ checked Sep 19, 2026	201-500	295 contacts →
	Strong evidence “MCO is a global leader on a mission to revolutionize how financial firms tackle compliance, making it simpler, smarter, and more effective.” Source: RevenueBase Database · checked Sep 19, 2026
18	Prescient Security	Strong evidence	Nashville, TN, United StatesHQ checked Sep 19, 2026	201-500	272 contacts →
	Strong evidence “Prescient Security is a global cybersecurity and compliance firm delivering risk-based audits, advanced penetration testing, and end-to-end framework support.” Source: RevenueBase Database · checked Sep 19, 2026
19	Guidepost Solutions	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	201-500	268 contacts →
	Indirect evidence “We stand at the forefront of leadership, insight, and guidance in a world marked by complexity and uncertainty.” Source: RevenueBase Database · checked Sep 19, 2026
20	Vaisesika	Partial evidence	Carlsbad, CA, United StatesHQ checked Sep 19, 2026	201-500	266 contacts →
	Partial evidence “Vaisesika Consulting is a global tech and consulting firm that helps businesses transform their digital setups and stay compliant in a straightforward way.” Source: RevenueBase Database · checked Sep 19, 2026
21	Martinelli Auditores	Indirect evidence	Joinville, United StatesHQ checked Sep 19, 2026	201-500	263 contacts →
	Indirect evidence “Fundada em 1973, a MARTINELLI consolidou posição como referência em auditoria e consultoria para empresas de todos os portes e segmentos do mercado nacional.” Source: RevenueBase Database · checked Sep 19, 2026
22	Baxter Clewis Cybersecurity	Indirect evidence	Cedar Hill, TX, United StatesHQ checked Sep 19, 2026	201-500	255 contacts →
	Indirect evidence “Baxter Clewis Cybersecurity, we bring to the table a unique set of experiences that allow us to best serve your cybersecurity needs.” Source: RevenueBase Database · checked Sep 19, 2026
23	Scrut Automation	Partial evidence	Palo Alto, CA, United StatesHQ checked Sep 19, 2026	51-200	248 contacts →
	Partial evidence “Governance, Risk, and Compliance simplified for new-age businesses.” Source: RevenueBase Database · checked Sep 19, 2026
24	G.M.Kapadia & CO	Indirect evidence	Mumbai, IndiaHQ checked Sep 19, 2026	51-200	248 contacts →
	Indirect evidence “G.” Source: RevenueBase Database · checked Sep 19, 2026
25	Thoropass	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	201-500	243 contacts →
	Indirect evidence “Thoropass is the only end-to-end cybersecurity auditor.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: compliance and IT audit firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names compliance and IT audit firms.
Partial evidence: Its own public description names part of compliance and IT audit firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name compliance and IT audit firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 8,397 compliance and IT audit firms worldwide

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Compliance and IT audit firms worldwide at a glance

As of Sep 19, 2026

28.4%Verified-email coverage

9.0Average contacts per company

1-10Median size (employees)

2.1%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

5,244

11-50

2,493

51-200

496

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among compliance and IT audit firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for compliance and IT audit firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “compliance and IT audit firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names compliance and IT audit firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among compliance and IT audit firms, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 21,411 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Compliance and IT audit firms by location

52 lists · largest first

Every Compliance and IT audit firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names compliance and IT audit firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many compliance and IT audit firms are there worldwide?

RevenueBase identified 8,397 compliance and IT audit firms worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Aparajitha Corporate Services Private Limited, headquartered in Madurai, tops this list with the largest team on record.

Which country has the most compliance and IT audit firms?

The United States leads with 1,637 companies, followed by India (974) and the United Kingdom (463). Every compliance and IT audit firms list by country and city is linked on this page.

Which city has the most compliance and IT audit firms?

London leads with 174 headquartered companies, followed by Sao Paulo (135) and Mumbai (128).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 21,411 verified decision-maker contacts tracked across these 8,397 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.