# List of media companies and publishers in Ontario

Tamtam tracks 48 media companies and publishers headquartered in Ontario. This list ranks all of them by number of employees on LinkedIn, led by Thomson Reuters, Rogers Communications and CBC/Radio-Canada. Their median headcount is 608. Half of them were founded in 1998 or later. The most common headquarters are Toronto (41), Ottawa (3) and Markham (2).

This selection of large companies in Ontario includes businesses primarily engaged in media, telecommunications, and content creation. Thomson Reuters offers news and information tools for professionals, while Rogers Communications provides communication services. CBC/Radio-Canada and Bell Media are major players in broadcast media and entertainment, and Wattpad is a social storytelling platform. Spin Master focuses on children's entertainment.

A notable pattern is the strong concentration of headquarters in Toronto, indicating a central hub for media and telecommunications operations within the province. This includes companies like Corus Entertainment, Rogers Sports & Media, Postmedia Network Inc., The Globe and Mail, Metroland Media Group, TVO, and STAR MEDIA GROUP.

🇨🇦 Ontario · 48 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Thomson Reuters](https://www.tamtam.ai/c/thomson-reuters) (thomsonreuters.com)<br>It offers news and information tools for professionals in legal, regulatory, and tax sectors, helping them navigate complex environments. | Software Development | 🇨🇦 Toronto | 36,640 |  |
| 2 | [Rogers Communications](https://www.tamtam.ai/c/rogers-communications) (rogers.com)<br>Provider of communication services, supporting everyday connections and ensuring seamless connectivity for work and personal needs, with a focus on customer satisfaction | Telecommunications | 🇨🇦 Toronto | 28,500 |  |
| 3 | [CBC/Radio-Canada](https://www.tamtam.ai/c/cbc-radio-canada) (cbc.radio-canada.ca)<br>Canadian public broadcaster promoting Canadian culture through diverse programming in multiple languages, supporting creative work and job opportunities in television production | Broadcast Media Production and Distribution | 🇨🇦 Ottawa | 14,336 |  |
| 4 | [CBC](https://www.tamtam.ai/c/cbc-toronto) (cbc.ca)<br>Canada's national public broadcaster provides a wide range of radio, television, internet, and satellite services, offering diverse regional and cultural perspectives | Broadcast Media Production and Distribution | 🇨🇦 Toronto | 6,848 | 1932 |
| 5 | [Bell Media](https://www.tamtam.ai/c/bell-media) (bellmedia.ca)<br>Leading media and entertainment company with diverse assets in premium video, audio, out-of-home advertising, and digital media; committed to keeping Canadians entertained and informed. | Entertainment Providers | 🇨🇦 Toronto | 6,682 |  |
| 6 | [Wattpad](https://www.tamtam.ai/c/wattpad) (company.wattpad.com)<br>Innovative social storytelling platform empowering diverse Gen Z writers with a global community engaging in original stories, driving the future of entertainment | Software Development | 🇨🇦 Toronto | 4,872 | 2006 |
| 7 | [Spin Master](https://www.tamtam.ai/c/spin-master) (spinmaster.com)<br>Global children's entertainment company creating toys, digital games, and original content including popular brands and preschool franchises. | Manufacturing | 🇨🇦 Toronto | 3,140 |  |
| 8 | [Corus Entertainment](https://www.tamtam.ai/c/corus-entertainment) (corusent.com)<br>Development and delivery of diverse multimedia content including television, radio, digital platforms, and streaming services for global audiences. | Broadcast Media Production and Distribution | 🇨🇦 Toronto | 2,864 | 1999 |
| 9 | [Rogers Sports & Media](https://www.tamtam.ai/c/rogers-sports-and-media) (rogerssportsandmedia.com)<br>A dynamic sports and media company in Canada, focusing on innovation, diversity, inclusivity, and community impact through digital-first and data-driven approaches | Media Production | 🇨🇦 Toronto | 1,436 |  |
| 10 | [Postmedia Network Inc.](https://www.tamtam.ai/c/postmedia-network-inc) (postmedia.com)<br>A Canadian news media company with over 120 brands delivering engaging content across print, online, and mobile platforms to millions weekly | Newspaper Publishing | 🇨🇦 Toronto | 1,303 |  |
| 11 | [The Globe and Mail](https://www.tamtam.ai/c/the-globe-and-mail) (theglobeandmail.com)<br>Provides comprehensive coverage of Canadian national, international, and business news through print and online platforms since 1844. | Newspaper Publishing | 🇨🇦 Toronto | 1,123 | 1844 |
| 12 | [Metroland Media Group](https://www.tamtam.ai/c/metroland-media-group) (metroland.com)<br>A Southern Ontario publisher of daily newspapers and community news websites, committed to community journalism and creating custom marketing plans | Media Production | 🇨🇦 Toronto | 1,058 | 1981 |
| 13 | [Chartered Professional Accountants of Canada (CPA Canada)](https://www.tamtam.ai/c/chartered-professional-accountants-of-canada-cpa-canada) (cpacanada.ca)<br>Support Canadian CPAs through regulation collaboration, professional development, public interest advocacy, and international accounting profession strengthening efforts. | Accounting | 🇨🇦 Toronto | 1,058 | 2013 |
| 14 | [TVO](https://www.tamtam.ai/c/tvo) (tvo.org)<br>TVO is a digital learning and media organization that provides impactful education products, current affairs, documentaries, and award-winning children's content | Online Audio and Video Media | 🇨🇦 Toronto | 920 | 1970 |
| 15 | [STAR MEDIA GROUP](https://www.tamtam.ai/c/star-media-group) (torstar.com)<br>Leading media portfolio including newspapers, websites, and innovative tablet apps Embracing digital and mobile media opportunities with a passion for news and content | Newspaper Publishing | 🇨🇦 Toronto | 835 |  |
| 16 | [CTV News](https://www.tamtam.ai/c/ctv-news) (ctvnews.ca)<br>Leading Canadian news organization with a network of national, international, and local news operations providing trusted news through multiple platforms | Broadcast Media Production and Distribution | 🇨🇦 Toronto | 809 |  |
| 17 | [Sun Media](https://www.tamtam.ai/c/sun-media) (sunmedia.ca)<br>Canada's largest newspaper publisher providing local news and information to over 105 million readers weekly in urban markets and communities | Newspaper Publishing | 🇨🇦 Toronto | 730 | 1996 |
| 18 | [Harlequin](https://www.tamtam.ai/c/harlequin) (harlequin.com)<br>Global publisher of women's books with over 1,300 authors, offering a wide variety of genres in multiple languages to readers worldwide | Book and Periodical Publishing | 🇨🇦 Toronto | 728 | 1949 |
| 19 | [Toronto Star](https://www.tamtam.ai/c/toronto-star) (thestar.com)<br>Canada's largest daily newspaper, with over 6 million weekly readers Thestarcom is a highly visited newspaper website in Canada | Newspaper Publishing | 🇨🇦 Toronto | 721 | 1892 |
| 20 | [Nelson](https://www.tamtam.ai/c/nelson) (linktr.ee)<br>A Canadian education publisher offering innovative K-12 solutions, including a digital learning platform, focused on accessibility, engagement, and critical thinking development | Education | 🇨🇦 Toronto | 718 |  |
| 21 | [SJC](https://www.tamtam.ai/c/sjc-toronto) (stjoseph.com)<br>Leading Canadian communications organization offering full-production content, advertising technology, print infrastructure, and iconic media brands for clients across North America | Marketing Services | 🇨🇦 Toronto | 698 | 1956 |
| 22 | [WildBrain](https://www.tamtam.ai/c/wildbrain) (wildbrain.com)<br>A global entertainment company creating top content for kids and families, including hit series, TV channels, licensing, and iconic brands like Peanuts and Teletubbies | Entertainment Providers | 🇨🇦 Toronto | 692 |  |
| 23 | [Sportsnet](https://www.tamtam.ai/c/sportsnet) (sportsnet.ca)<br>Canada's leading sports media brand offers multimedia content including TV channels, radio, website, app, and podcasts covering NHL, MLB, NBA, soccer, tennis, wrestling, and more | Broadcast Media Production and Distribution | 🇨🇦 Toronto | 650 | 1998 |
| 24 | [MINING.COM](https://www.tamtam.ai/c/mining-com) (mining.com)<br>Leading digital news site for global mining sector, with over 11 million monthly page views, 200,000+ subscribers, mobile-friendly platform, and award-winning marketing and editorial content | Online Audio and Video Media | 🇨🇦 Toronto | 608 | 2008 |
| 25 | [MEM](https://www.tamtam.ai/c/mem-toronto) (meminc.ca)<br>A leading unscripted production group in Toronto since 2014, creating original, high-rated content for global viewers on various platforms | Broadcast Media Production and Distribution | 🇨🇦 Toronto | 554 | 2014 |
| 26 | [theScore](https://www.tamtam.ai/c/thescore) (scoremediaandgaming.com)<br>A subsidiary of PENN Entertainment, the company empowers sports fans through personalized digital media, sports betting products, live scores, news, stats, and betting information | Spectator Sports | 🇨🇦 Toronto | 536 | 2012 |
| 27 | [Blue Ant Media](https://www.tamtam.ai/c/blue-ant-media) (blueantmedia.com)<br>International media company producing and distributing diverse premium content, operating multiple streaming and pay TV channels worldwide from Toronto headquarters. | Broadcast Media Production and Distribution | 🇨🇦 Toronto | 536 | 2011 |
| 28 | [Pelmorex](https://www.tamtam.ai/c/pelmorex) (pelmorex.com)<br>An international weather content and technology company providing hyper-local weather data, climate information, and alert systems globally | Information Services | 🇨🇦 Oakville | 519 | 1989 |
| 29 | [Entertainment One](https://www.tamtam.ai/c/entertainment-one) (entertainmentone.com)<br>Talent-driven studio specializing in development, acquisition, production, financing, and distribution of scripted, unscripted, and podcast content worldwide. | Entertainment Providers | 🇨🇦 Toronto | 492 |  |
| 30 | [TFO](https://www.tamtam.ai/c/tfo) (tfo.org)<br>A public Franco-Ontarian media producing and broadcasting educational multimedia content for children, teenagers, and adults, with a collaborative and innovative work environment | Broadcast Media Production and Distribution | 🇨🇦 Toronto | 443 |  |
| 31 | [The People People Group](https://www.tamtam.ai/c/the-people-people-group) (thepeoplepeoplegroup.com)<br>A community of over 4000 HR, Recruitment, and Operations professionals, providing resources and networking opportunities Apply for free today! | Human Resources Services | 🇨🇦 Toronto | 420 | 2017 |
| 32 | [Guru Studio](https://www.tamtam.ai/c/guru-studio) (gurustudio.com)<br>A creative-driven entertainment industry leader in animated storytelling, producing award-winning hit shows for kids and families worldwide Passionate about talent and original thinking | Animation | 🇨🇦 Toronto | 395 | 2000 |
| 33 | [The Canadian Press](https://www.tamtam.ai/c/the-canadian-press) (thecanadianpress.com)<br>Independent national news agency in Canada offering news in English and French, multimedia content production, partnership with industry leaders, and digital content curation services | Media Production | 🇨🇦 Toronto | 323 |  |
| 34 | [ZOOMER](https://www.tamtam.ai/c/zoomer) (zoomermedia.ca)<br>Global leader in creating content and experiences tailored for the 45-plus demographic across various media platforms and through partnerships with CARP | Broadcast Media Production and Distribution | 🇨🇦 Toronto | 311 |  |
| 35 | [Jam Filled](https://www.tamtam.ai/c/jam-filled) (jamfilled.com)<br>An animation company founded in 2008, with studios in Ottawa and Toronto, that produces quality projects in a fun environment | Entertainment Providers | 🇨🇦 Ottawa | 311 | 2008 |
| 36 | [Penguin Random House Canada](https://www.tamtam.ai/c/penguin-random-house-canada) (penguinrandomhouse.ca)<br>A leading Canadian book publisher with diverse imprints, producing over 500 new titles annually and distributing thousands more, fostering a love for reading worldwide | Book and Periodical Publishing | 🇨🇦 Toronto | 302 | 2013 |
| 37 | [Arts & Crafts](https://www.tamtam.ai/c/arts-and-crafts) (arts-crafts.ca)<br>A Toronto based artist-owned media specializing in music, offering record label, artist management, and music publishing services worldwide Representing a diverse roster of artists | Musicians | 🇨🇦 Toronto | 255 | 2002 |
| 38 | [Scholastic Canada](https://www.tamtam.ai/c/scholastic-canada) (scholastic.ca)<br>A leading publisher in Canada, providing award-winning books, educational materials, and software to children, parents, and teachers to promote reading and learning | Book and Periodical Publishing | 🇨🇦 Markham | 233 | 1957 |
| 39 | [SiriusXM Canada](https://www.tamtam.ai/c/siriusxm-canada) (siriusxm.ca)<br>A leading audio entertainment company offering ad-free music, sports talk, live events, news, podcasts, and exclusive talk shows on various devices | Broadcast Media Production and Distribution | 🇨🇦 Toronto | 217 |  |
| 40 | [The Weather Network](https://www.tamtam.ai/c/the-weather-network) (theweathernetwork.com)<br>An international weather content and technology company, providing innovative data solutions and business insights to consumers and businesses globally | Information Services | 🇨🇦 Oakville | 213 | 1989 |
| 41 | [The Conference Board of Canada](https://www.tamtam.ai/c/the-conference-board-of-canada) (conferenceboard.ca)<br>A leading Canadian research organization specializing in economic trends, public policy, and organizational performance, providing objective insights and leadership development services | Research Services | 🇨🇦 Ottawa | 212 | 1954 |
| 42 | [Group of Gold Line](https://www.tamtam.ai/c/group-of-gold-line) (groupofgl.com)<br>Specializing in telecommunication solutions, IPTV, web-to-print, and business solutions, the group offers innovative technology products connecting people globally | Telecommunications | 🇨🇦 Markham | 206 | 1991 |
| 43 | [University of Toronto Press](https://www.tamtam.ai/c/university-of-toronto-press) (utppublishing.com)<br>A leading scholarly publisher in Canada, offering a wide range of scholarly, course, and general-interest books, along with innovative journal and distribution services | Book and Periodical Publishing | 🇨🇦 Toronto | 188 | 1901 |
| 44 | [G7 Research Group](https://www.tamtam.ai/c/g7-research-group) (g7.utoronto.ca)<br>Global network of scholars and professionals providing independent information, analysis, and research on the G7/8 and related institutions since 1987 | International Affairs | 🇨🇦 Toronto | 100 | 1988 |
| 45 | [BNN Bloomberg](https://www.tamtam.ai/c/bnn-bloomberg) (bnnbloomberg.ca)<br>A Canadian television service focused on business news, with market coverage, stock updates, business news, and analysis for Canadian investors | Media Production | 🇨🇦 Toronto | 85 |  |
| 46 | [Channel Zero Inc.](https://www.tamtam.ai/c/channel-zero-inc) (chz.com)<br>A Canadian media company offering independent television, film, and digital media through various channels, including over-the-air TV, specialty channels, and digital sales agency services | Broadcast Media Production and Distribution | 🇨🇦 Toronto | 57 | 2000 |
| 47 | [WOWtv/Canadian Chinese Media Network](https://www.tamtam.ai/c/wowtv-canadian-chinese-media-network) (wow1.tv)<br>The company is a Chinese media network in Canada offering news, entertainment, documentaries, and programming through television, IPTV, online streaming, and mobile devices | Media Production | 🇨🇦 Toronto | 23 |  |
| 48 | [AzFarang](https://www.tamtam.ai/c/azfarang) (azfarang.ir)<br>An independent media platform focusing on narrative experiences beyond Iran's borders, presenting diverse perspectives while respecting local laws and providing engaging content | Media Production | 🇨🇦 Toronto | 5 | 2016 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

## More company lists in Ontario

- [The largest companies in Ontario](https://www.tamtam.ai/l/largest-companies-ontario) (5,032)
- [Multinational companies in Ontario](https://www.tamtam.ai/l/multinational-companies-ontario) (901)
- [Financial services firms in Ontario](https://www.tamtam.ai/l/financial-services-firms-ontario) (396)
- [Manufacturers in Ontario](https://www.tamtam.ai/l/manufacturers-ontario) (389)
- [Critical infrastructure operators in Ontario](https://www.tamtam.ai/l/critical-infrastructure-operators-ontario) (344)
- [Retail chains in Ontario](https://www.tamtam.ai/l/retail-chains-ontario) (327)
- [Companies with in-house R&D in Ontario](https://www.tamtam.ai/l/r-and-d-companies-ontario) (300)
- [Logistics companies in Ontario](https://www.tamtam.ai/l/logistics-companies-ontario) (285)
- [Education providers in Ontario](https://www.tamtam.ai/l/education-companies-ontario) (276)
- [SaaS companies in Ontario](https://www.tamtam.ai/l/saas-companies-ontario) (275)
- [Truck Transportation companies in Ontario](https://www.tamtam.ai/l/truck-transportation-companies-ontario) (270)
- [Transportation, Logistics, Supply Chain and Storage companies in Ontario](https://www.tamtam.ai/l/transportation-logistics-supply-chain-and-storage-companies-ontario) (261)
- [Public sector organisations in Ontario](https://www.tamtam.ai/l/public-sector-organisations-ontario) (259)
- [Financial Services companies in Ontario](https://www.tamtam.ai/l/financial-services-companies-ontario) (250)
- [IT Services and IT Consulting companies in Ontario](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-ontario) (235)
- [Software Development companies in Ontario](https://www.tamtam.ai/l/software-development-companies-ontario) (231)
- [Healthcare providers in Ontario](https://www.tamtam.ai/l/healthcare-providers-ontario) (226)
- [Hardware manufacturers in Ontario](https://www.tamtam.ai/l/hardware-companies-ontario) (213)
- [Professional services firms in Ontario](https://www.tamtam.ai/l/professional-services-firms-ontario) (211)
- [Hospitals and Health Care companies in Ontario](https://www.tamtam.ai/l/hospitals-and-health-care-companies-ontario) (205)
- [Distributors and wholesalers in Ontario](https://www.tamtam.ai/l/distributors-and-wholesalers-ontario) (183)
- [Companies with a mobile app in Ontario](https://www.tamtam.ai/l/companies-with-mobile-app-ontario) (181)
- [Publicly traded companies in Ontario](https://www.tamtam.ai/l/publicly-traded-companies-ontario) (156)
- [IT services companies in Ontario](https://www.tamtam.ai/l/it-services-companies-ontario) (156)

## The same list elsewhere in Canada

- [Media companies and publishers in Canada](https://www.tamtam.ai/l/media-companies-canada) (79)
- [Media companies and publishers in Toronto](https://www.tamtam.ai/l/media-companies-toronto) (41)

## The same list elsewhere

- [Media companies and publishers in the world](https://www.tamtam.ai/l/media-companies-in-the-world) (4,316)

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Source: https://www.tamtam.ai/l/media-companies-ontario