Company lists · Data refreshed September 2026
Top 25 Online advertising agencies based in Toronto, Canada
RevenueBase identified 934 online advertising agencies headquartered in Toronto, Canada as of September 2026 and tracks 4,406 professional contacts across them, including 950 with verified work emails. Toronto is the largest hub.
This list covers online advertising agencies headquartered in Toronto, Canada, 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 5, 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 online advertising agencies based in Toronto, Canada
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 267 | ||||
“Webware.ai is a leading provider of ai digital marketing solutions for small businesses looking to establish and grow their online presence.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 233 | ||||
“If your business isn't generating consistent leads online, the problem usually is your digital presence.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 74 | ||||
“BreezeMaxWeb manages Internet advertising campaigns for local businesses using GEO targeted search to increase our clients' online profile, ensuring maximum local exposure and…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 69 | ||||
“Whether you are an experienced Internet marketer looking for new ways to reach your audience, a direct marketer exploring how the Internet can be a profitable source of leads or…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 69 | ||||
“Elite Digital is an award winning digital agency with headquarters in Toronto, Canada.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 55 | ||||
“Your problem isn’t getting new customers, it’s building a predictable system to get new customers.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 53 | ||||
“Measure Marketing is dedicated to developing concrete, quantifiable Demand Generation marketing solutions for business of all sizes and types.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 49 | ||||
“For over a decade, Edkent Media has been at the forefront of Canada’s digital marketing evolution, helping businesses establish strong online identities and drive remarkable…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 47 | ||||
“Reshift Media is a Toronto-based digital marketing company that works with businesses and their advertising agencies to provide a one-stop destination for cohesive social, search…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 41 | ||||
“One Core Media is a leading full-service online digital media agency and marketing consulting firm.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | ScizersPartial evidence | 41 | |||
“More and more people spend most of their time online.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 40 | ||||
“We’re not your typical digital marketing agency.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 31 | ||||
“Based in Toronto, Qode Media Canada is a partnership of Google and Facebook accredited digital agencies.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 31 | ||||
“The Digital Nuts is a leading Social Media Marketing and Design agency renowned for its expertise in Social Media Management, Content Creation, Brand Design and Website…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 29 | ||||
“Local SEO Search Inc.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 28 | ||||
“Page Pros is an award-winning digital marketing agency built on trust and dedicated to fostering strong client relationships.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 28 | ||||
“Search + Gather is a Toronto based digital marketing agency that specializes in helping businesses grow through Paid Social, Paid Search, Amazon Advertising and more.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 28 | ||||
“Welcome to GWebPro!” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 28 | ||||
“BlueFlower Media is a digital agency providing branding, development, and digital marketing solutions to small & mid-market businesses.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 28 | ||||
“CMC Canadian Marketing Agency is located in Toronto.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 27 | ||||
“GlobeSign is a result driven company focused on helping clients achieve their desired business outcomes through Branding, Website Design, Website Maintenance, Search Engine…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 24 | ||||
“As seen in Forbes, Entrepreneur, Bloomberg, Huff Post, NBC & More 300+ clients, from new ventures to global brands, since 2017.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 24 | ||||
“Start - 2004, Dataslices Dubai.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 23 | ||||
“Our Mission To build highly profitable strategic partnerships Who We Are Lavin Media is a modern solution to your sales growth challenges.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | MajesticIndirect evidence | 22 | |||
“Majestic is a digital marketing innovation agency.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 934 online advertising agencies based in Toronto, Canada
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Online advertising agencies based in Toronto, Canada at a glance
As of Sep 5, 2026Companies by employee count
Email recency for this list is measured across the whole Canada list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Toronto, over 934 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 online advertising 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 Toronto, Canada whose own description of what they do matches “online advertising 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 online advertising agencies, and records with no verified work email. Companies headquartered outside Toronto 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, 950 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 5, 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.
Online advertising agencies by metro in Canada
- Online advertising agencies in Toronto934
- Online advertising agencies in Vancouver360
- Online advertising agencies in Montreal337
- Online advertising agencies in Calgary278
- Online advertising agencies in Mississauga149
- Online advertising agencies in Edmonton137
- Online advertising agencies in Ottawa116
- Online advertising agencies in Winnipeg73
- Online advertising agencies in London66
- Online advertising agencies in Victoria56
- Online advertising agencies in Brampton54
- Online advertising agencies in Kitchener47
- Online advertising agencies in Oakville41
- Online advertising agencies in Quebec41
- Online advertising agencies in Vaughan37
- Online advertising agencies in Halifax36
- Online advertising agencies in Markham36
- Online advertising agencies in Burlington35
- Online advertising agencies in North York35
- Online advertising agencies in Richmond Hill32
- Online advertising agencies in Hamilton31
- Online advertising agencies in Burnaby30
- Online advertising agencies in Kelowna30
- Online advertising agencies in North Vancouver30
- Online advertising agencies in Surrey30
- Online advertising agencies in Windsor28
- Online advertising agencies in Laval27
- Online advertising agencies in Saskatoon27
- Online advertising agencies in Barrie25
Frequently asked
How many online advertising agencies are there based in Toronto, Canada?
RevenueBase identified 934 online advertising agencies headquartered in Toronto, Canada 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?
webware.ai, headquartered in Toronto, tops this list with the largest team on record.
Which city has the most online advertising agencies?
Toronto leads with 934 headquartered companies, followed by Vancouver (360) and Montreal (337).
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 950 verified decision-maker contacts tracked across these 934 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 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 934 online advertising agencies based in Toronto, Canada. Start with a free account, no credit card.
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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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