Company lists · Data refreshed September 2026

Top 8 Cross-border compliance firms based in Istanbul, Türkiye

RevenueBase identified 239 company matches for cross-border compliance firms associated with Istanbul, Türkiye as of September 2026 and tracks 2,869 professional contacts across them, including 706 with verified work emails. Across Türkiye, Istanbul is the largest hub for this category.

This list covers company matches for cross-border compliance firms associated with Istanbul, Türkiye, 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 September 19, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 19, 2026 How this list was built
239Companies
2,869Contacts tracked
706Verified emails
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The 8 largest cross-border compliance firms based in Istanbul, Türkiye

Ranked by team size
Top 8 of 239 company matches for cross-border compliance firms based in Istanbul, Türkiye, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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 matchIstanbul, TürkiyeHQ recorded Sep 19, 2026201-50054 contacts →

Exact match

“HİTİT GÜMRÜK MÜŞAVİRLİĞİ; 1980’li yıllardan beri Gümrük Müşavirliği mesleğine verdiğimiz emeğin ürünüdür.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchIstanbul, TürkiyeHQ recorded Sep 19, 202611-5031 contacts →

Exact match

“2002 yılında kurulan Özsoy Hukuk ve Danışmanlık Bürosu, yerli ve yabancı şirketlere, kurumlara ve bireylere hukukun birçok alanında; talebe göre Türkçe veya İngilizce dillerinde…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchIstanbul, TürkiyeHQ recorded Sep 19, 202651-20021 contacts →

Exact match

“Tunaset Gümrük Müşavirliği, uzman çalışan kadrosuyla sahip olduğu tüm bilgi, birikim tecrübesini müşterilerine en yüksek kalitede sunarak Türkiye'nin önde gelen kurum ve…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchIstanbul, TürkiyeHQ recorded Sep 19, 2026201-50017 contacts →

Exact match

“Sistem Global is among the leading professional services companies in Turkey with a focus on technology, engineering and manufacturing oriented companies of all sizes including…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchIstanbul, TürkiyeHQ recorded Sep 19, 202611-5010 contacts →

Exact match

“Y|K Hukuk Bürosu tarafından benimsenen temel ilke uyuşmazlık ortaya çıktıktan sonra değil henüz ortaya çıkmadan önce önleyici hukuk hizmeti sunarak müvekkillerine adil ve etkin…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchIstanbul, TürkiyeHQ recorded Sep 19, 202611-509 contacts →

Exact match

“Committed to consistent excellence, GKS is an elite law firm that helps clients anticipate what is next and navigate new paths to success and growth.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchIstanbul, TürkiyeHQ recorded Sep 19, 202611-509 contacts →

Exact match

“Diyojen Group Uluslararası Lojistik ve Danışmanlık firması olarak siz değerli müşterilerimize Amerika’da yaşamak, çalışmak, oturmak için yapılması gerekilen işlemler ve sonrasında…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchIstanbul, TürkiyeHQ recorded Sep 19, 202611-508 contacts →

Exact match

“Gümrük mevzuatı gri bir mevzuattır, yoruma açıktır.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 8 of 239 cross-border compliance firms based in Istanbul, Türkiye

See the full list, filter by size, metro and specialty, and access 706 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cross-border compliance firms based in Istanbul, Türkiye at a glance

As of Sep 19, 2026
24.6%Verified-email coverage
12.0Average contacts per company
11-50Median size (employees)
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
116
11-50
85
51-200
24
201-500
11
1,001-5,000
1
10001+
1

Email recency for this list is measured across the whole Türkiye list rather than for Istanbul, so it is reported there. Company counts and contact totals on this page are exact for Istanbul, over 239 companies.

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.
What qualifies
Company records associated with Istanbul, Türkiye whose business descriptions match “cross-border compliance 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 706 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 September 19, 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.

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 “cross-border compliance firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cross-border compliance firms are there based in Istanbul, Türkiye?

RevenueBase identified 239 company matches for cross-border compliance firms associated with Istanbul, Türkiye as of September 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?

Hi̇ti̇t Global Gümrük Müşavi̇rli̇ği̇ A.Ş tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in Türkiye has the most cross-border compliance firms?

Istanbul leads Türkiye with 239 company records, followed by Ankara (45) and Sisli (39).

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 706 professional contacts with verified work emails tracked across these 239 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 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 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.