Company lists · Data refreshed September 2026

Top 25 International SEO agencies based in the Netherlands

Name: International SEO agencies based in the Netherlands
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 228 companies tracked

RevenueBase identified 228 international SEO agencies headquartered in the Netherlands as of September 2026 and tracks 1,196 professional contacts across them, including 397 with verified work emails and 119 with mobile numbers. Amsterdam is the largest hub.

This list covers international SEO agencies 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

228Companies

1,196Contacts tracked

397Verified emails

119Mobile numbers

Unlock all 228 companies Free signup · no credit card · 500 free credits

The 25 largest international SEO agencies based in the Netherlands

Ranked by team size

Top 25 of 228 international SEO agencies based in the Netherlands, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names international SEO agencies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Grizzly NEW MarketingPartial evidence	Breda, NetherlandsHQ checked Sep 4, 2026	51-200	111
	“Grizzly New Marketing is een gespecialiseerd SEO marketingbureau in Nederland (Breda en Rotterdam), België (Antwerpen-Berchem) en de Verenigde Staten (New York).” Source: company website · checked Sep 4, 2026
2	SeedersIndirect evidence	Zwolle, NetherlandsHQ checked Sep 4, 2026	51-200	105
	“Seeders is your one-stop-shop cross-border marketing agency, specializing in market entry marketing strategies.” Source: company website · checked Sep 4, 2026
3	DoublesmartIndirect evidence	Gouda, NetherlandsHQ checked Sep 4, 2026	11-50	53
	“Wil je marktleider worden in je niche?#1 in Google op het zoekwoord dat er in jouw branche echt toe doet?” Source: company website · checked Sep 4, 2026
4	Blauwe Monsters Part Of ConclusionIndirect evidence	Haarlem, NetherlandsHQ checked Sep 4, 2026	51-200	45
	“Blauwe Monsters is an ambitious and innovative online marketing agency.” Source: company website · checked Sep 4, 2026
5	WoelerIndirect evidence	Alkmaar, NetherlandsHQ checked Sep 4, 2026	11-50	37
	“Woeler is een club van zo’n 30 jonge mensen die dagelijks vanuit ons toffe nieuwe pand in Alkmaar vol passie de online activiteiten optuigen en onderhouden voor al haar klanten.” Source: company website · checked Sep 4, 2026
6	SemwerktIndirect evidence	Jb, NetherlandsHQ checked Sep 4, 2026	11-50	27
	“Semwerkt is een snelgroeiend online marketingbureau voor ambitieuze bedrijven, zowel grote als kleine partijen.” Source: company website · checked Sep 4, 2026
7	RED Online Marketing B.VIndirect evidence	Utrecht, NetherlandsHQ checked Sep 4, 2026	11-50	25
	Source: company website · checked Sep 4, 2026
8	Markant InternetIndirect evidence	Ba, NetherlandsHQ checked Sep 4, 2026	11-50	22
	“Bij Markant Internet zijn we sinds 2011 gespecialiseerd in Zoekmachine optimalisatie en Zoekmachine adverteren.” Source: company website · checked Sep 4, 2026
9	Ranking Masters DÉ 1 SEM Specialist In DE BeneluxIndirect evidence	Haarlem, NetherlandsHQ checked Sep 4, 2026	11-50	21
	“Wij zijn Ranking Masters!” Source: company website · checked Sep 4, 2026
10	LeadrsIndirect evidence	Breda, NetherlandsHQ checked Sep 4, 2026	11-50	19
	“Leadrs: Wij maken online marktleiders.” Source: company website · checked Sep 4, 2026
11	OnyourlineIndirect evidence	Tj, NetherlandsHQ checked Sep 4, 2026	11-50	17
	“Onyourline is een organisatie met ruime ervaring op het gebied van online strategie, online marketing en zoekmachine optimalisatie.” Source: company website · checked Sep 4, 2026
12	ONDERPartial evidence	Je, NetherlandsHQ checked Sep 4, 2026	11-50	16
	“SEO is het fundament van je website en ondersteunt je online marketingmix.” Source: company website · checked Sep 4, 2026
13	Daadkracht MarketingIndirect evidence	Cj, NetherlandsHQ checked Sep 4, 2026	11-50	16
	“Daadkracht Marketing is een full service online marketingbureau.” Source: company website · checked Sep 4, 2026
14	We Talk SEOPartial evidence	Etten-Leur, NetherlandsHQ checked Sep 4, 2026	11-50	13
	“We Talk SEO is een online marketing bureau gevestigd te Etten-Leur, welke zich richt op het verbeteren van de vindbaarheid van websites en webshops in de zoekmachines.” Source: company website · checked Sep 4, 2026
15	TWICEPartial evidence	Amsterdam, NetherlandsHQ checked Sep 4, 2026	1-10	13
	“TWICE, an international marketing agency that provides digital access to new markets and target audience around the world.” Source: company website · checked Sep 4, 2026
16	Multiply B.VIndirect evidence	Zoetermeer, NetherlandsHQ checked Sep 4, 2026	11-50	11
	“Multiply is een innovatief online marketing bureau gericht op het vindbaar maken van websites in zoekmachines.” Source: company website · checked Sep 4, 2026
17	SociallaneIndirect evidence	Den Haag, NetherlandsHQ checked Sep 4, 2026	11-50	10
	“SocialLane is een no-nonsense online marketingbureau waar enthousiaste mensen dagelijks de digitale wegen afstruinen voor het realiseren van concrete resultaten en online succes.” Source: company website · checked Sep 4, 2026
18	Local Internet Marketing B.VIndirect evidence	Breda, NetherlandsHQ checked Sep 4, 2026	11-50	10
	“Local Internet Marketing is gespecialiseerd in zoekmachine optimalisatie voor het MKB.” Source: company website · checked Sep 4, 2026
19	SEO & SEAPartial evidence	Alphen Aan Den Rijn, NetherlandsHQ checked Sep 4, 2026	1-10	9
	“SEO & SEA heeft zich omringd met een stevig partnernetwerk van specialisten, waardoor wij jouw hele online marketing strategie kunnen verzorgen.” Source: company website · checked Sep 4, 2026
20	Space'm OnlineIndirect evidence	Eindhoven, NetherlandsHQ checked Sep 4, 2026	1-10	9
	“At Space’M Online, we help companies that are ready to take their online visibility seriously.” Source: company website · checked Sep 4, 2026
21	Webleaders Online Marketing Specialist SEO SEAIndirect evidence	Bk, NetherlandsHQ checked Sep 4, 2026	1-10	8
	“Webleaders is een gespecialiseerd online marketing bureau met een sterk portfolio van zowel lokale bedrijven als multinationals.” Source: company website · checked Sep 4, 2026
22	Zetwee B.VIndirect evidence	Rotterdam, NetherlandsHQ checked Sep 4, 2026	1-10	8
	“Van digital marketing naar AI innovatie.Wij helpen bedrijven en organisaties met hun online uitdagingen.” Source: company website · checked Sep 4, 2026
23	Dima SupportIndirect evidence	Cn, NetherlandsHQ checked Sep 4, 2026	1-10	8
	“DIMA Support het toonaangevende, creatieve full-service bureau voor zoekmachinemarketing, E-commerce, website ontwikkeling en uitgever van online doelgroep portals.” Source: company website · checked Sep 4, 2026
24	Kliq InternetIndirect evidence	Km, NetherlandsHQ checked Sep 4, 2026	11-50	8
	“Kliq Internet zoekmachine marketing bureau bestaat officieel sinds maart 2011 en wij zijn 'online' in Nederland en Belgie.” Source: company website · checked Sep 4, 2026
25	Kenekt DigitalPartial evidence	Amsterdam, NetherlandsHQ checked Sep 4, 2026	1-10	8
	“We are a helpful SEO company.” Source: company website · checked Sep 4, 2026

Showing 25 of 228 international SEO agencies based in the Netherlands

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 397 reachable decision-makers.

Free signup · no credit card

See all 228 companies

International SEO agencies based in the Netherlands at a glance

As of Sep 4, 2026

1-10Median size (employees)

AmsterdamLargest hub · 14 HQs

119Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

189

11-50

51-200

Verified emails by last verification

0–30

31–60

61–90

215

90–180

151

180+

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 international SEO agencies, 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 “international SEO agencies”. 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 international SEO agencies, 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, 397 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 international SEO agencies are there based in the Netherlands?

RevenueBase identified 228 international SEO agencies 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?

Grizzly NEW Marketing, headquartered in Ng, tops this list with the largest team on record.

Which city has the most international SEO agencies?

Amsterdam leads with 14 headquartered companies, followed by Rotterdam (10) and Breda (5).

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 397 verified decision-maker contacts tracked across these 228 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.

Ready to reach these companies? Verified emails and direct dials for all 228 international SEO agencies based in the Netherlands. Start with a free account, no credit card.

Get the full list

Related lists

International SEO agencies by geography

Browse the directory

Browse: Companies home · All Netherlands lists · All International SEO agencies lists · New lists

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.