Company lists · Data refreshed September 2026

Top 15 Professional service firms based in Croatia

RevenueBase identified 33 professional service firms headquartered in Croatia as of September 2026 and tracks 333 professional contacts across them, including 191 with verified work emails. Zagreb is the largest hub.

This list covers professional service firms headquartered in Croatia, 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 20, 2026.

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 20, 2026 86% judged on-target in blind review
33Companies
333Contacts tracked
191Verified emails
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The 15 largest professional service firms based in Croatia

Ranked by team size
Top 15 of 33 professional service firms based in Croatia, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to professional service 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceZagreb, CroatiaHQ checked Sep 20, 202651-200135 contacts →

Indirect evidence

“Mazars in Croatia has rebranded to Forvis Mazars in Croatia.”

Source: RevenueBase Database · checked Sep 20, 2026
2Indirect evidenceNovi Zagreb – Istok, CroatiaHQ checked Sep 20, 202651-20047 contacts →

Indirect evidence

“Unija ETL Accounting is a premier international accounting firm offering top-tier services in accounting, payroll processing, IT, and consultancy across more than 55 countries…”

Source: RevenueBase Database · checked Sep 20, 2026
3Indirect evidenceZagreb, CroatiaHQ checked Sep 20, 202651-20032 contacts →

Indirect evidence

“LeitnerLeitner ist eine der führenden Sozietäten von Steuerberatern und Wirtschaftsprüfern im CEE/SEE Raum.”

Source: RevenueBase Database · checked Sep 20, 2026
4Strong evidenceRijeka, CroatiaHQ checked Sep 20, 202611-5023 contacts →

Strong evidence

“iAudit is a professional services firm of auditors and business advisers who provide a variety of audit, advisory and tax services to established business clients.”

Source: RevenueBase Database · checked Sep 20, 2026
5Indirect evidenceZagreb, CroatiaHQ checked Sep 20, 202611-5017 contacts →

Indirect evidence

“IHS has been providing audit, accounting and advisory services since 1994.”

Source: RevenueBase Database · checked Sep 20, 2026
6Indirect evidenceZagreb, CroatiaHQ checked Sep 20, 202651-2008 contacts →

Indirect evidence

“Mazars in Croatia provides accounting, audit, tax and financial advisory services.”

Source: RevenueBase Database · checked Sep 20, 2026
7Indirect evidenceZagreb, CroatiaHQ checked Sep 20, 202611-508 contacts →

Indirect evidence

“Davne 1950.”

Source: RevenueBase Database · checked Sep 20, 2026
8Indirect evidenceDonji Grad, CroatiaHQ checked Sep 20, 20261-107 contacts →

Indirect evidence

“Kreston Croatia - your business partner in the world of accounting, audit, tax and consulting”

Source: RevenueBase Database · checked Sep 20, 2026
9Indirect evidenceZagreb, CroatiaHQ checked Sep 20, 20261-103 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 20, 2026
10Indirect evidenceRijeka, CroatiaHQ checked Sep 20, 20261-103 contacts →

Indirect evidence

“AZ Control d.o.o.”

Source: RevenueBase Database · checked Sep 20, 2026
11Indirect evidenceZagreb, CroatiaHQ checked Sep 20, 202611-503 contacts →

Indirect evidence

“The agile caring partner for Mittelstand shaped world market leaders As attorneys, tax advisers, management and IT consultants and auditors, we are present with 110 own offices in…”

Source: RevenueBase Database · checked Sep 20, 2026
12Indirect evidenceZagreb, CroatiaHQ checked Sep 20, 20261-103 contacts →

Indirect evidence

“We provide auditing, accounting and financial consulting services.”

Source: RevenueBase Database · checked Sep 20, 2026
13Indirect evidenceZagreb, CroatiaHQ checked Sep 20, 20261-103 contacts →

Indirect evidence

“SAPIENTIA Nova Ltd is a leading company by knowledge, client relations and services specialized for finance and accounting.”

Source: RevenueBase Database · checked Sep 20, 2026
14Indirect evidenceKarlovac, CroatiaHQ checked Sep 20, 202611-502 contacts →

Indirect evidence

“RKR is a company with long-standing experience in the fields of auditing, accounting and finance.”

Source: RevenueBase Database · checked Sep 20, 2026
15Indirect evidenceZagreb, CroatiaHQ checked Sep 20, 202611-502 contacts →

Indirect evidence

“Introducing DBCI, your trusted partner for accounting and consulting services.”

Source: RevenueBase Database · checked Sep 20, 2026

Showing 15 of 33 professional service firms based in Croatia

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Professional service firms based in Croatia at a glance

As of Sep 20, 2026
57.4%Verified-email coverage
10.1Average contacts per company
1-10Median size (employees)
63.6%Largest-city concentration · Zagreb
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
17
11-50
12
51-200
4

Email recency for this list is measured worldwide rather than for Croatia, so it is reported there. Company counts and contact totals on this page are exact for Croatia, over 33 companies.

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 professional service 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.
What qualifies
Companies headquartered in Croatia whose own description of what they do matches “professional service 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 professional service 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 professional service firms, and records with no verified work email. Companies headquartered outside Croatia 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 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, 191 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 20, 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

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 professional service 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 professional service firms are there based in Croatia?

RevenueBase identified 33 professional service firms headquartered in Croatia 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?

Forvis Mazars In Croatia, headquartered in Zagreb, tops this list with the largest team on record.

Which city has the most professional service firms?

Zagreb leads with 21 headquartered companies, followed by Slavonski Brod (2) and Cakovec (1).

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 191 verified decision-maker contacts tracked across these 33 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 20, 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.