Company lists · Data verified August 2026

Top 25 Contextual advertising agencies based in Canada

Name: Contextual advertising agencies based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 3,396 companies tracked

There are 3,396 contextual advertising agencies headquartered in Canada (RevenueBase, August 2026). RevenueBase tracks 19,285 professional contacts across them, including 5,808 with verified work emails and 2,006 with mobile numbers. Toronto is the largest hub.

This list covers contextual advertising agencies headquartered in Canada, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

3,396Companies

19,285Contacts tracked

5,808Verified emails

2,006Mobile numbers

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The 25 largest contextual advertising agencies based in Canada

Ranked by team size

Top 25 of 3,396 contextual advertising agencies based in Canada, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Stackadapt	Toronto, ON	1,001-5,000	1,617	1,084
2	Numberly	Quebec, QC	501-1,000	484	247
3	Accel Digital AD Operations	Toronto, ON	201-500	246	108
4	Directive	n/a	51-200	210	85
5	Thrive Digital	Vancouver, BC	51-200	159	54
6	Essencemediacom Canada	Montreal, QC	201-500	100	36
7	DFO Performance	Vancouver, BC	201-500	87	13
8	Search Engine People INC	Toronto, ON	51-200	84	42
9	Promotedge	Toronto	51-200	78	7
10	Breezemaxweb Online Media Solutions	Calgary, AB	51-200	74	16
11	Loknow	Vancouver, BC	51-200	72	46
12	Major TOM	Vancouver, BC	51-200	71	43
13	Elite Digital	Toronto, ON	51-200	71	8
14	IONIK	Toronto, ON	201-500	70	5
15	Seoplus	Ottawa, ON	51-200	68	11
16	Shaw Scott	Vancouver, BC	51-200	65	41
17	88gravity	Edmonton	51-200	64	13
18	Operatic Agency	Hamilton, ON	51-200	54	39
19	1web	North York, ON	51-200	54	26
20	Digitad	Montreal, QC	51-200	51	29
21	Outedge Media Canada	Toronto, ON	201-500	50	6
22	Globalwide Media	Victoria, BC	51-200	43	26
23	Advesa Digital	Burnaby, BC	51-200	43	6
24	Acart Communications	Ottawa, ON	51-200	42	27
25	ZIA Creative Network	Halifax	51-200	42	20

Showing 25 of 3,396 contextual advertising agencies based in Canada

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Contextual advertising agencies based in Canada at a glance

As of Aug 28, 2026

1-10Median size (employees)

TorontoLargest hub · 810 HQs

2,006Contacts with mobile numbers

17Emails re-verified in last 30 days

Companies by employee count

1-10

2,492

11-50

780

51-200

201-500

501-1,000

1,001-5,000

10001+

Contextual advertising agencies by metro

Metro	Companies
Contextual advertising agencies in Toronto	810
Contextual advertising agencies in Vancouver	307
Contextual advertising agencies in Montreal	275
Contextual advertising agencies in Calgary	198
Contextual advertising agencies in Mississauga	112
Contextual advertising agencies in Edmonton	110
Contextual advertising agencies in Ottawa	99

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “contextual advertising agencies”, with match quality audited by blind human judging, and headquartered in Canada.
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: Contact records re-verify on a rolling cadence; 17 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many contextual advertising agencies are there based in Canada?

There are 3,396 contextual advertising agencies headquartered in Canada as of August 2026 (RevenueBase).

What is the largest company on this list?

Stackadapt, headquartered in Toronto, tops this list with the largest team on record.

Which city has the most contextual advertising agencies?

Toronto leads with 810 headquartered companies, followed by Vancouver (307) and Montreal (275).

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 5,808 verified decision-maker contacts tracked across these 3,396 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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Contextual advertising agencies by geography

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.