| # |
| [u]brandnot edited since 2018 | 523 St. Anthony Street, Hintonburg | | | |
| A |
| Aboriginal Marketing Servicesnot edited since 2018 | 2000 Thurston Drive, South Keys | | | |
| Acartnot edited since 2018 | 171 Nepean Street, Centretown | | | |
| Accurate Strategic Marketing and Communicationsnot edited since 2018 | 57 Auriga Drive, Nepean | | | |
| Agility PR Solutionsnot edited since 2022 | 319 McRae Avenue, Westboro | | | |
| Akran Marketingnot edited since 2018 | 2000 Thurston Drive, South Keys | | | |
| Aragona Agencynot edited since 2018 | Kanata, no street on record | | | |
| B |
| Banfield Agency | 35 Armstrong Street, Hintonburg | | | |
| Blackiron Agency | 300 Richmond Road, Westboro | blackiron.agency | | |
| C |
| Cayenne Creativenot edited since 2018 | 1343 Labrie Avenue, Gloucester | | | |
| Compass Rose Groupnot edited since 2018 | 1 York Street, Lowertown | | | |
| Creo Marketingnot edited since 2018 | 24 Edgewater Street, Kanata | creomarketing.com | | |
| F |
| Flagship Solutionsnot edited since 2018 | 70 George Street, Lowertown | | | |
| G |
| Gadar Promotionsnot edited since 2019 | 1120 Morrison Drive, Nepean | | | |
| Godzspeed Communicationsnot edited since 2022 | 299 Bank Street, Centretown | | | |
| I |
| Initiate Marketingnot edited since 2018 | 130 Terence Matthews Crescent, Kanata | | | |
| M |
| McCabe Promotionalnot edited since 2019 | 5380 Canotek Road, Blackburn Hamlet | | | |
| Media Mall Marketingnot edited since 2018 | 2435 Holly Lane, Alta Vista | | | |
| Mediaplusnot edited since 2019 | Centretown, no street on record | | | |
| N |
| Nationalnot edited since 2018 | 81 Metcalfe Street, Centretown | | | |
| O |
| Outfront Medianot edited since 2018 | 565 Industrial Avenue, Vanier | | | |
| S |
| Soshalnot edited since 2019 | 421 Richmond Road, Westboro | | | |
| Sparknot edited since 2018 | 4 Florence Street, Centretown | | | |
| Spark Advocacynot edited since 2018 | 71 Bank Street, Centretown | | | |
| Spoonitynot edited since 2019 | 267 Richmond Road, Westboro | | | |
| Syntax Strategicnot edited since 2019 | 411 Donald B. Munro Drive, Carp | | | |
| T |
| The Marketing Worksnot edited since 2019 | 6 Hamilton Avenue North, Hintonburg | | | |
| TrueCourse Communicationsnot edited since 2018 | 1285 Teron Road, Kanata | | | |
| X |
| Xactly | 311 Richmond Road, Westboro | | | |
