Advertising Agencies in Ontario

27 advertising agencies are listed in Ontario, Canada. 19 have been assessed on the Agency List Score as of October 2026; the highest-ranked is Feast at 96.7.

Ranked · 16 of 19 assessed

Ordered by Agency List Score
#1 of 19 assessed
Feast
97

Creative storytelling and design with strategic impact

Brand CampaignsCreative Concepting and ProductionMedia Planning and Buying
#2 of 19 assessed
Link Lumin
96

Digital marketing and software development for diverse business needs

Accessibility DesignAd Operations and TraffickingAds Management
#3 of 19 assessed
Jib
94

Boutique design and advertising with a focus on big ideas.

Creative Concepting and Production
#4 of 19 assessed
creativeatwork.ca
94
Verified

Branding and SEO services for inbound lead capture and search visibility

Social Media Management (SMM)Website Optimization
#5 of 19 assessed
Play Advertising
92

Brand development and digital marketing for impactful online presence

Ad Operations and TraffickingAudio and Podcast AdsBrand Campaigns
#6 of 19 assessed
PUSH
88

Integrates media and creative for optimized campaign performance

Ad Operations and TraffickingAudio and Podcast AdsBrand Campaigns
#7 of 19 assessed
Pattison Outdoor
73

Canada's largest out-of-home advertising with nationwide reach

Ad Operations and TraffickingAudio and Podcast AdsBrand Campaigns
#8 of 19 assessed
Wild On Media
73

Unique outdoor advertising and experiential marketing solutions

Brand CampaignsMedia Planning and BuyingOut of Home Media
#9 of 19 assessed
Primead
73

Connects brands with multicultural consumers through strategic insights and creative production.

Ad Operations and TraffickingAudio and Podcast AdsBrand Campaigns
#10 of 19 assessed
Xactly Design & Advertising
72

Amplifies brands with strategy, creative execution, and integrated campaigns

Ad Operations and TraffickingAudio and Podcast AdsBrand Campaigns
#11 of 19 assessed
Junction59
72

Human-centric B2B strategies and impactful customer engagement ideas.

Ad Operations and TraffickingAudio and Podcast AdsBrand Campaigns
#12 of 19 assessed
Gladstone
72

Creative advertising and multimedia production with strategic storytelling

Ad Operations and TraffickingAudio and Podcast AdsBrand Campaigns
#13 of 19 assessed
Barrett And Welsh
53

Multicultural marketing and transit advertising across diverse industries

Media Planning and Buying
#13 of 19 assessed
Direct Response Media Group
53

Direct mail solutions with data-driven targeting and analytics.

Ad Operations and TraffickingAudio and Podcast AdsBrand Campaigns
#13 of 19 assessed
About Us. CANEAST
53

Connecting local and international brands with Canadian and ethnic consumers

Ad Operations and TraffickingAudio and Podcast AdsBrand Campaigns
#16 of 19 assessed
John St.
52

Creates unignorable brands through design and strategy

Brand CampaignsCreative Concepting and Production

Also in Ontario · 11 not ranked here

8 have not yet been assessed on the Agency List Score. Alphabetical.

About this ranking

What this page ranks

This page ranks 16 of the 19 assessed advertising agencies in Ontario, Canada — the ones carrying a published score — out of 27 listed.

The score measures how well an agency documents its own work in public — named clients, quantified outcomes, and whether those outcomes are attributed to the agency rather than described as the client's own results. It does not measure client satisfaction, price, or availability.

Cohorts and awards

Agencies are compared within a cohort — here, Advertising in Ontario, Canada. A cohort must be large enough to express the band being awarded: at least 8 assessed agencies for a top 25% award, 20 for top 10%, 40 for top 5%, and 300 for top 1%. This one holds 19, so the strongest award available here is top 25%.

The 8 advertising agencies not yet assessed are listed on this page but not ranked.

A further 3 were assessed and no published evidence of their work was found, so no score is shown for them.

Read the full methodology

Paid placement

Partner agencies can buy a labelled placement block above the ranking on this page. It is always marked as paid and is never mixed into the ranked list.

Placement is paid; it does not affect the ranking, cohort membership, or any agency's score. Ranking position, cohort membership and the score itself are not for sale.

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Questions

How many advertising agencies are in Ontario, Canada?
27 are listed on Agency List in Ontario, Canada. 19 of them have been assessed on the Agency List Score as of October 2026, and 16 of those carry a published score.
Which advertising agency in Ontario, Canada is ranked highest?
Feast, with an Agency List Score of 96.7, ranks #1 of 19 assessed agencies in Advertising in Ontario, Canada.
Why are 11 advertising agencies listed here but not ranked?
8 of the 27 listed have not yet been assessed on the Agency List Score. A further 3 were assessed and no published evidence of their work was found, so no score is shown for them. They each have a profile and are listed below the ranking, alphabetically, rather than being hidden or mixed into it.
How is the ranking determined?
By Agency List Score, within the Advertising in Ontario, Canada cohort of 19 assessed agencies. The score is computed from evidence published on each agency's own website: named clients, quantified outcomes, and whether the outcome is attributed to the agency. Paid placement does not affect it.