Company lists · Data refreshed November 2026

Top 25 Internal audit advisory firms worldwide

RevenueBase identified 14,779 company matches for internal audit advisory firms worldwide as of November 2026 and tracks 464,243 professional contacts across them, including 130,021 with verified work emails. India is the largest market and Mumbai the largest hub.

This list covers company matches for internal audit advisory firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for internal audit advisory firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
14,779Companies
464,243Contacts tracked
130,021Verified emails
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The 25 largest internal audit advisory firms worldwide

Ranked by team size
Top 25 of 14,779 company matches for internal audit advisory firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchGurgaon, IndiaHQ recorded Nov 6, 202610001+30,313 contacts →

Exact match

“KPMG entities in India are established under the laws of India and are owned and managed (as the case may be) by established Indian professionals.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Nov 6, 202610001+14,853 contacts →

Exact match

“Make growth happen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Nov 6, 202610001+11,496 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchChicago, AL, United StatesHQ recorded Nov 6, 202610001+11,006 contacts →

Exact match

“At BDO, we believe how we show up matters.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchMenlo Park, United StatesHQ recorded Nov 6, 20265,001-10,0009,086 contacts →

Exact match

“Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSao Paulo, BrazilHQ recorded Nov 6, 20261,001-5,0006,138 contacts →

Exact match

“A KPMG opera como uma rede internacional de firmas-membro que oferecem serviços nas áreas de Audit, Tax e Advisory.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchToronto, CanadaHQ recorded Nov 6, 20265,001-10,0005,901 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchParis La Défense, FranceHQ recorded Nov 6, 202610001+5,822 contacts →

Exact match

“Leader de l'audit, du conseil et de l'expertise comptable, KPMG France est membre de KPMG International, réseau de cabinets indépendants exerçant dans 155 pays.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchNew York, CA, United StatesHQ recorded Nov 6, 20261,001-5,0004,410 contacts →

Exact match

“EisnerAmper, one of the largest business consulting firms in the world, is comprised of EisnerAmper LLP, a licensed independent CPA firm that provides client attest services; and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchLuxembourgHQ recorded Nov 6, 20261,001-5,0003,425 contacts →

Exact match

“PwC Luxembourg is the largest professional services firm in Luxembourg with over 3,600 people employed from 90 different countries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchRaleigh, NC, United StatesHQ recorded Nov 6, 20261,001-5,0003,265 contacts →

Exact match

“Cherry Bekaert is a top-ranked U.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchMilwaukee, WI, United StatesHQ recorded Nov 6, 20261,001-5,0003,201 contacts →

Exact match

“Always advancing.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchDublin 2, IrelandHQ recorded Nov 6, 20261,001-5,0002,988 contacts →

Exact match

“KPMG is a leading provider of professional services, offering a range of audit, tax and advisory services to a broad range of domestic and international clients across all sectors…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchBdo, IndonesiaHQ recorded Nov 6, 20261,001-5,0002,758 contacts →

Exact match

“We help ambitious organisations move forward with confidence.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchDublin, IrelandHQ recorded Nov 6, 20261,001-5,0002,584 contacts →

Exact match

“In Ireland, Grant Thornton Ireland and Grant Thornton Corporate Finance Limited (and their respective subsidiary/affiliate entities) operate under an alternative practice…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchEnterprise, AL, United StatesHQ recorded Nov 6, 20261,001-5,0002,214 contacts →

Exact match

“Carr, Riggs & Ingram (CRI) is a Top 25 nationally-ranked accounting and advisory firm driven by relationships to cultivate growth.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchUnited StatesHQ recorded Nov 6, 20261,001-5,0002,192 contacts →

Exact match

“We’re Eide Bailly (I’d bay-lee), a business advisory, accounting and technology firm built with our clients in mind.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchNew York, MI, United StatesHQ recorded Nov 6, 20261,001-5,0002,167 contacts →

Exact match

“UHY is one of the nation’s largest professional services firms providing audit, tax, consulting and advisory services to clients primarily in the dynamic middle market.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSp, BrazilHQ recorded Nov 6, 20261,001-5,0001,994 contacts →

Exact match

“Presidida por Raul Corrêa da Silva, a BDO RCS foi fundada em 2001 e desde então mantém participação expressiva no mercado de auditorias.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchChicago, IL, United StatesHQ recorded Nov 6, 20261,001-5,0001,918 contacts →

Exact match

“Sikich offers the public and private sectors a diverse platform of professional services across consulting, technology, and compliance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchJohannesburg, South AfricaHQ recorded Nov 6, 20261,001-5,0001,906 contacts →

Exact match

“Audit | Advisory | Tax The South African member firm of BDO International - The Leader for Exceptional Client Service since 1963 BDO clients experience a distinctive level of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchNew Delhi, IndiaHQ recorded Nov 6, 20261,001-5,0001,821 contacts →

Exact match

“Established in 1935 and registered with ICAI, Walker Chandiok & Co LLP is the 4th largest firm by the number of listed companies audited.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSydney, AustraliaHQ recorded Nov 6, 20261,001-5,0001,808 contacts →

Exact match

“Your business deserves remarkable support.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchWarsaw, PolandHQ recorded Nov 6, 20261,001-5,0001,741 contacts →

Exact match

“KPMG jest globalną organizacją niezależnych firm świadczących profesjonalne usługi z zakresu audytu, doradztwa podatkowego, finansowego, prawnego oraz consultingu.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchJakarta, IndonesiaHQ recorded Nov 6, 2026501-1,0001,729 contacts →

Exact match

“BDO is the leading provider of professional services within the mid-tier of our profession.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 14,779 internal audit advisory firms worldwide

See the full list, filter by size, metro and specialty, and access 130,021 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Internal audit advisory firms worldwide at a glance

As of Nov 6, 2026
28.0%Verified-email coverage
31.4Average contacts per company
11-50Median size (employees)
1.8%Largest-city concentration · Mumbai
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
6,537
11-50
5,957
51-200
1,563
201-500
371
501-1,000
93
1,001-5,000
97
5,001-10,000
21
10001+
17

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for internal audit advisory firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “internal audit advisory firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 130,021 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Internal audit advisory firms by location

110 lists · largest first

Every Internal audit advisory 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “internal audit advisory firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many internal audit advisory firms are there worldwide?

RevenueBase identified 14,779 company matches for internal audit advisory firms worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Kpmg India tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most internal audit advisory firms?

India leads with 2,527 companies, followed by the United States (961) and Brazil (913). Every internal audit advisory firms list by country and city is linked on this page.

Which city has the most internal audit advisory firms?

Mumbai leads with 268 company records, followed by Dubai (266) and New Delhi (238).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 130,021 professional contacts with verified work emails tracked across these 14,779 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.