10 Best Marketing Agencies in Ontario [2026 Updated]

1. Rethink

• Focus: Brand strategy, creative advertising and design.
• URL: https://rethinkideas.com
• Overview: Rethink is an award-winning independent creative agency with an office in Toronto, known for its bold, idea-driven advertising. It works with national consumer brands on campaigns, branding and design.

2. Cossette

• Focus: Integrated advertising and brand experience.
• URL: https://www.cossette.com
• Overview: Cossette is a large Canadian full-service agency with a major Toronto presence. It combines creative, media, data and customer experience for enterprise clients.

3. Narrative

• Focus: Brand strategy and creative campaigns.
• URL: https://www.narrativeagency.com
• Overview: Narrative is a Toronto-based creative agency focused on brand-building and storytelling. It serves mid-sized and large clients across consumer, financial and retail sectors.

4. Cleverly

• Focus: B2B lead generation and LinkedIn outreach.
• URL: https://www.cleverly.co
• Overview: Cleverly is a lead generation agency that helps founders, consultants and B2B firms book meetings through LinkedIn and email outreach. It suits small and mid-sized businesses seeking a predictable sales pipeline.

5. Bluleadz

• Focus: Inbound marketing and HubSpot services.
• URL: https://www.bluleadz.com
• Overview: Bluleadz is a HubSpot-focused inbound agency. It helps B2B companies with content, lead generation and sales enablement.

6. Cundari

• Focus: Integrated advertising and brand marketing.
• URL: https://www.cundari.com
• Overview: Cundari is a Toronto-based independent agency offering strategy, creative, digital and media services. It works with mid-sized and large brands across retail, automotive and consumer sectors.

7. Wunderman Thompson Canada

• Focus: Integrated creative, data and commerce.
• URL: https://www.wundermanthompson.com
• Overview: Wunderman Thompson is a global agency with a Toronto office. It delivers brand, CRM and e-commerce work for large enterprise clients.

8. Leo Burnett Toronto

• Focus: Creative advertising and brand campaigns.
• URL: https://leoburnett.ca
• Overview: Leo Burnett Toronto is the Canadian office of the global Leo Burnett network, creating advertising and brand campaigns. It works with large consumer and corporate brands.

9. Mindshare Canada

• Focus: Media planning and buying.
• URL: https://www.mindshareworld.com
• Overview: Mindshare is a global media agency network with a Toronto office. It provides media strategy, planning and data-driven optimization for large advertisers.

10. Hootsuite Social Services Partner: Social Media Group

• Focus: Social media marketing and community management.
• URL: https://www.hootsuite.com
• Overview: This entry points to Hootsuite, a Vancouver-founded social media platform with a Toronto presence. It offers tools and services for managing social strategy and reporting.