Company lists · Data refreshed September 2026
Top 25 Internal audit consulting companies based in the Netherlands
RevenueBase identified 112 internal audit consulting companies headquartered in the Netherlands as of September 2026 and tracks 760 professional contacts across them, including 335 with verified work emails and 50 with mobile numbers. Amsterdam is the largest hub.
This list covers internal audit consulting companies headquartered in the Netherlands, 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 2026.
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.
The 25 largest internal audit consulting companies based in the Netherlands
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 90 | ||||
“Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 2 | 56 | ||||
Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 3 | Auditdienst AcamIndirect evidence | 55 | |||
“Past de beheersstructuur nog bij mijn organisatie?” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 4 | 44 | ||||
“E&M Consultants is opgericht door Frank Engberts en Gert Meuleman.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 5 | 27 | ||||
“Audittrail verzorgt audits voor en adviseert over de vakgebieden informatiebeveiliging, privacy, governance, risk & compliance en kwaliteit.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 6 | 25 | ||||
“Confinant is a boutique audit firm.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 7 | 24 | ||||
“In the 13 years that InAudit has been in existence, we have grown from a provider of internal audit services into a group that does much more than that.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 8 | 23 | ||||
“VHM Audit is een groeiend audit-only kantoor met zo’n 25 jonge, enthousiaste, vakkundige medewerkers.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 9 | 18 | ||||
“2-Control is an IT audit organization and offers support in providing insight into and improving the reliability of automated information.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 10 | 16 | ||||
“Uw omgeving heeft behoefte aan inzicht in uw organisatie.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 11 | 16 | ||||
“Ferocia helpt organisaties met het optimaliseren van hun sturing en beheersing.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 12 | 15 | ||||
“Argis IT Consultants is your partner in IT Control.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 13 | 15 | ||||
“Welkom bij Just Audit!” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 14 | 13 | ||||
“Door de alsmaar veranderende, complexere wereld en steeds nieuwe wet- en regelgeving ontstaan er nieuwe risico’s en kansen.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 15 | 12 | ||||
“ESJ Audit verzorgt wettelijke controleopdrachten voor middelgrote ondernemingen, zowel nationaal als internationaal.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 16 | 12 | ||||
“Risguard is opgericht door Thom, Wolbert en Jurgen, drie ervaren IT-professionals met gezamenlijk ruim 25 jaar ervaring binnen IT audit, IT risk management & IT compliance.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 17 | 10 | ||||
“Into Control is gespecialiseerd in het adviseren en ondersteunen van uw organisatie bij de implementatie van interne beheersing.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 18 | 10 | ||||
“Orgon consults all kind of profit and non-profit companies in accounting, taxes, control, management structuring, internal and external auditting, human resource management…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 19 | 10 | ||||
“ENDYMION Amsterdam renders (One-off) complex assurance and advisory engagements, often in transactional and crisis-driven contexts.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 20 | 8 | ||||
“Duijnborgh Audit is een onafhankelijke audit- en adviesorganisatie en biedt pragmatische en sterk oplossingsgerichte ondersteuning aan grote en middelgrote ondernemingen.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 21 | 8 | ||||
“Diggle is een jonge, energieke organisatie met ervaren professionals, gericht op IT-audit, data-analyse en cybersecurity.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 22 | 7 | ||||
“Audit Ready’s solutions are not standard.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 23 | 7 | ||||
“Transparency and reliability are core values for Conify.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 24 | 7 | ||||
“weACT: Drie pijlers, één missie.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 25 | 6 | ||||
“ACCORIS wordt gevormd door een netwerk van professionals op het gebied van Corporate Governance, IT audits, Interim- en projectmanagement, fusies en overnames, management buy-outs…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 112 internal audit consulting companies based in the Netherlands
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Internal audit consulting companies based in the Netherlands at a glance
As of Sep 4, 2026Companies by employee count
Verified emails by last verification
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 internal audit consulting companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the Netherlands whose own description of what they do matches “internal audit consulting companies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among internal audit consulting companies, and records with no verified work email. Companies headquartered outside Netherlands are excluded even when they keep an office there.
- 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 an evidence 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, 335 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 4, 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.
Frequently asked
How many internal audit consulting companies are there based in the Netherlands?
RevenueBase identified 112 internal audit consulting companies headquartered in the Netherlands 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?
Protiviti The Netherlands, headquartered in Amsterdam, tops this list with the largest team on record.
Which city has the most internal audit consulting companies?
Amsterdam leads with 13 headquartered companies, followed by Aa (6) and Rotterdam (6).
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 335 verified decision-maker contacts tracked across these 112 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 4, 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.
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