| 1 | Merkle Canada INC. | Canada | Toronto | 1 University Ave Fl 10 | Ontario | M5J 2P1 | merkleinc.***** | 2014 | $300,556,500 | 1,500 | N/A | N/A | 8952078 |
| 2 | Mccann Worldgroup Canada INC | Canada | Toronto | 1300-200 Wellington St W | Ontario | M5V 0N6 | mccann.***** | 1929 | $222,097,850 | 650 | N/A | N/A | N/A |
| 3 | Go Bee Industries INC | Canada | Hamilton | 1-334a Hatt St | Ontario | L9H 2H9 | gobeeinc.***** | 2003 | $200,371,000 | 1,000 | N/A | N/A | N/A |
| 4 | Commonwealth | Canada | Toronto | 1300-10 Bay St | Ontario | M5J 2R8 | N/A | 1922 | $148,634,715 | 435 | N/A | N/A | N/A |
| 5 | Vml Canada INC | Canada | Toronto | 155 Queens Quay E 10th Fl | Ontario | M5A 0W4 | N/A | 2024 | $136,675,600 | 400 | N/A | N/A | N/A |
| 6 | Natmar Holdings INC | Canada | Toronto | 26 Duncan St | Ontario | M5V 2B9 | N/A | 1992 | $126,233,730 | 630 | N/A | N/A | N/A |
| 7 | Dac Group (holdings) LIMITED | Canada | Toronto | 5000 Yonge St Suite 700 | Ontario | M2N 7E9 | dacgroup.***** | 1972 | $119,591,150 | 350 | N/A | N/A | N/A |
| 8 | Grey Advertising Ulc | Canada | Toronto | 500-46 Spadina Ave | Ontario | M5V 2H8 | grey.***** | 1958 | $114,465,815 | 335 | N/A | N/A | N/A |
| 9 | Lg2 Montreal INC | Canada | Montréal | 100-4051 Rue Molson | Québec | H1Y 3L1 | desjardins.***** | 2020 | $106,948,657 | 313 | N/A | N/A | N/A |
| 10 | Leo Burnett Company LTD | Canada | Toronto | 1200-175 Bloor St E North Tower, | Ontario | M4W 3R9 | leoburnett.***** | 1952 | $102,506,700 | 300 | N/A | N/A | 331520 |
| 11 | Publicis Media Canada INC. | Canada | Montréal | 358 Rue Beaubien O Bureau 500 | Québec | H2V 4S6 | publicis.***** | 1996 | $97,381,365 | 285 | N/A | N/A | 3469336 |
| 12 | Liebel-Flarsheim Canada INC | Canada | Pointe-claire | 7500 Rte Transcanadienne | Québec | H9R 5H8 | facebook.***** | 2020 | $85,422,250 | 250 | N/A | N/A | N/A |
| 13 | America Online Canada INC | Canada | Toronto | 200-99 Spadina Ave | Ontario | M5V 3P8 | N/A | 1985 | $80,148,400 | 400 | N/A | N/A | N/A |
| 14 | Omd Canada | Canada | Toronto | 1300-33 Bloor St E | Ontario | M4W 3H1 | omd.***** | 1999 | $78,588,470 | 230 | N/A | N/A | N/A |
| 15 | Sid Lee INC | Canada | Montréal | 1 Place Ville Marie Suite 12102 | Québec | H3B 4E6 | sidlee.***** | 1992 | $50,092,750 | 250 | N/A | N/A | N/A |
| 16 | Bbdo Canada CORP | Canada | Toronto | 2 Bloor St W Suite 3200 | Ontario | M4W 3E2 | debtsolutions.***** | 2002 | $42,077,910 | 210 | N/A | N/A | N/A |
| 17 | 1570707 Ontario INC | Canada | Toronto | 1-55 Horner Ave | Ontario | M8Z 4X6 | ims.***** | 2003 | $40,074,200 | 200 | N/A | N/A | N/A |
| 18 | J. P. Abbott Distribution Service LTD | Canada | Guelph | 534 Speedvale Ave E | Ontario | N1E 1P6 | 5198213206.***** | 1978 | $40,074,200 | 200 | N/A | N/A | N/A |
| 19 | J.W.T Enterprises INC | Canada | Toronto | 8th-160 Bloor St E | Ontario | M4W 3P7 | jwt.***** | 1976 | $40,074,200 | 200 | N/A | N/A | N/A |
| 20 | Advantage Parts Solutions LTD | Canada | Burnaby | 110-8061 Lougheed Hwy | British Columbia | V5A 1W9 | adps.***** | 2016 | $40,074,200 | 200 | N/A | N/A | N/A |
| 21 | I.M.S. Inquiry Management Systems LTD | Canada | Toronto | 1-55 Horner Ave | Ontario | M8Z 4X6 | ims.***** | 1976 | $40,074,200 | 200 | N/A | N/A | N/A |
| 22 | Dac Group / Canada LTD | Canada | Toronto | 5000 Yonge St Suite 700 | Ontario | M2N 7E9 | worldfinancialgroup.***** | 1998 | $40,074,200 | 200 | N/A | N/A | N/A |
| 23 | Lot342 INC | Canada | Toronto | 342 Munster Ave | Ontario | M8Z 3C5 | N/A | 2013 | $40,074,200 | 200 | N/A | N/A | N/A |
| 24 | Carat Canada INC | Canada | Toronto | 1 University Ave 6f | Ontario | M5J 2P1 | carat.***** | 1994 | $32,460,102 | 162 | N/A | N/A | N/A |
| 25 | Tadiem INC | Canada | Toronto | 225 Wellington St W | Ontario | M5V 3G7 | bensimonbyrne.***** | 1993 | $32,059,360 | 160 | N/A | N/A | N/A |
| 26 | Mindshare Canada LTD | Canada | Toronto | 155 Queens Quay E | Ontario | M5A 1B6 | mindshareworld.***** | 2017 | $32,059,360 | 160 | N/A | N/A | N/A |
| 27 | Skiron INC | Canada | Québec | 101-56 Rue Saint-pierre | Québec | G1K 4A1 | sitourcanada.***** | 1983 | $30,456,392 | 152 | N/A | N/A | N/A |
| 28 | Verb Interactive INC | Canada | Halifax | 1656 Barrington St 5th Flr | Nova Scotia | B3J 2A2 | verbinteractive.***** | 2004 | $30,256,021 | 151 | N/A | N/A | N/A |
| 29 | Pattison Outdoor Advertising LIMITED Partnership | Canada | Mississauga | 500-2700 Matheson Blvd E | Ontario | L4W 4V9 | pattisonoutdoor.***** | 2008 | $30,055,650 | 150 | N/A | N/A | N/A |
| 30 | Entreprise De Communications Tank INC. | Canada | Montréal | 55 Rue Prince | Québec | H3C 2M7 | tank.***** | 2016 | $30,055,650 | 150 | N/A | N/A | 10039438 |
| 31 | Marketel Communications INC | Canada | Montréal | 413 Rue Saint-jacques 10è Etage | Québec | H2Y 1N9 | mccann.***** | 1987 | $28,051,940 | 140 | N/A | N/A | N/A |
| 32 | Havas Canada Holdings, INC | Canada | Toronto | 473 Adelaide St W Suite 300 | Ontario | M5V 1T1 | havasworldwide.***** | 2018 | $28,051,940 | 140 | N/A | N/A | N/A |
| 33 | Saatchi & Saatchi Advertising INC | Canada | Toronto | 1300-175 Bloor St E | Ontario | M4W 3R8 | saatchi.***** | 2000 | $26,048,230 | 130 | N/A | N/A | N/A |
| 34 | Juniper Park Tbwa Communications Ulc | Canada | Toronto | 33 Bloor St E | Ontario | M4W 3H1 | tbwa-toronto.***** | 2011 | $25,647,488 | 128 | N/A | N/A | N/A |
| 35 | Act3 M.H.S. INC | Canada | Montréal | 7236 Rue Marconi | Québec | H2R 2Z5 | mediaexperts.***** | 1981 | $25,046,375 | 125 | N/A | N/A | N/A |
| 36 | R.S. Distribution Services LTD | Canada | Winnipeg | 175 Plymouth St | Manitoba | R2X 2T3 | rsdistribution.***** | 2014 | $24,244,891 | 121 | N/A | N/A | N/A |
| 37 | Kbs+p Canada LP | Canada | Toronto | 340 King St E 5th Fl | Ontario | M5A 1K8 | kbsp.***** | 2011 | $24,044,520 | 120 | N/A | N/A | N/A |
| 38 | Samo Media | Canada | Ottawa | 2-2469 Chasseur Ave | Ontario | K1V 8E7 | N/A | 2022 | $23,042,665 | 115 | N/A | N/A | 14376234 |
| 39 | Synergy Marketing Consultants INC | Canada | Toronto | 10 Kodiak Cres Suite 101 | Ontario | M3J 3G5 | thebestpromoproducts.***** | 2004 | $23,042,665 | 115 | N/A | N/A | N/A |
| 40 | 1815571 Ontario INC | Canada | Toronto | B-4051 Gordon Baker Rd | Ontario | M1W 2P3 | searchkings.***** | 2009 | $22,441,552 | 112 | N/A | N/A | N/A |
| 41 | Cundari Group LTD | Canada | Toronto | 130 Spadina Ave Suite 806 | Ontario | M5V 2L4 | cundari.***** | 1980 | $22,040,810 | 110 | N/A | N/A | N/A |
| 42 | Directwest CORPORATION | Canada | Regina | 2133-1 Ave | Saskatchewan | S4R 8G4 | facebook.***** | 1989 | $22,040,810 | 110 | N/A | N/A | N/A |
| 43 | Tva Ventes Et Marketing INC | Canada | Montréal | 1600 Boul de Maisonneuve E | Québec | H2L 4P2 | voxtv.***** | 1960 | $21,172,400 | 100 | N/A | N/A | N/A |
| 44 | Salt Experiential Commerce INC | Canada | Toronto | 249 Dufferin St | Ontario | M6K 1Z5 | saltxc.***** | 2019 | $21,172,400 | 100 | N/A | N/A | 14155700 |
| 45 | Media Ubiweb INC | Canada | Brossard | 2000 Rue de L'Éclipse Bureau 800 | Québec | J4Z 0S2 | ubiweb.***** | 2017 | $21,172,400 | 100 | N/A | N/A | N/A |
| 46 | Cedar Holdings INC. | Canada | Fredericton | 15 Mackenzie Rd | New Brunswick | E3B 6B6 | triustaxi.***** | 2003 | $21,172,400 | 100 | N/A | N/A | N/A |
| 47 | M5 Marketing Communications INC | Canada | St. John'S | 42 O'Leary Ave | Newfoundland and Labrador | A1B 2C7 | m5.***** | 2015 | $20,113,780 | 95 | N/A | N/A | N/A |
| 48 | Astral Media Affichage, S.E.C. | Canada | Montréal | 87 Rue Ontario O | Québec | H2X 1Y8 | N/A | 1994 | $20,037,100 | 100 | N/A | N/A | N/A |
| 49 | Dentsu Creative Advertising LTD | Canada | Toronto | 1 University Ave 6th Fl | Ontario | M5J 2P1 | N/A | 2013 | $20,037,100 | 100 | N/A | N/A | 8370117 |
| 50 | Union Advertising Canada LP | Canada | Toronto | 351 King St E Suite 600 | Ontario | M5A 0L6 | unioncreative.***** | 2012 | $20,037,100 | 100 | N/A | N/A | N/A |
| 51 | Reseau Quebecor Media INC. | Canada | Montréal | 612 Rue Saint-jacques | Québec | H3C 4M8 | quebecor.***** | 1993 | $20,037,100 | 100 | N/A | N/A | 2906180 |
| 52 | Outedge Media Canada LP | Canada | Toronto | 377 Horner Ave | Ontario | M8W 1Z6 | viacomoutdoor.***** | 2007 | $20,037,100 | 100 | N/A | N/A | N/A |
| 53 | Publicis Media Canada INC. | Canada | Toronto | 111 Queen St E Suite 200 | Ontario | M5C 1S2 | publicis.***** | 1998 | $20,037,100 | 100 | N/A | N/A | 3469336 |
| 54 | 1325931 Canada INC. | Canada | Toronto | 1-55 Horner Ave | Ontario | M8Z 4X6 | ims.***** | 1979 | $20,037,100 | 100 | N/A | N/A | 1325931 |
| 55 | Kinex Media INC. | Canada | Mississauga | 302-25 Watline Ave | Ontario | L4Z 2Z1 | kinexmedia.***** | 2012 | $19,055,160 | 90 | N/A | N/A | 8280061 |
| 56 | Hospitality Careers Online INC | Canada | Burnaby | 400-4789 Kingsway | British Columbia | V5H 0A3 | coach.***** | 1998 | $19,055,160 | 90 | N/A | N/A | N/A |
| 57 | Dentsu Creative Marketing LTD | Canada | Toronto | 1 University Ave Fl 6 | Ontario | M5J 2P1 | N/A | 2002 | $19,035,245 | 95 | N/A | N/A | N/A |
| 58 | Wavemaker Canada Ulc | Canada | Toronto | 155 Queens Quay E Fl 6 | Ontario | M5A 0W4 | wavemakerglobal.***** | 2017 | $19,035,245 | 95 | N/A | N/A | N/A |
| 59 | T B W A CHIAT/DAY | Canada | Toronto | 10 Lower Spadina Ave | Ontario | M5V 2Z2 | tbwa-toronto.***** | 1995 | $18,634,503 | 93 | N/A | N/A | N/A |
| 60 | Absolute Results Marketing Systems INC | Canada | Surrey | 104-2677 192 St | British Columbia | V3Z 3X1 | N/A | 2014 | $18,434,132 | 92 | N/A | N/A | N/A |
| 61 | Quarry Integrated Communications INC | Canada | St. Jacobs | 1-1440 King St N | Ontario | N0B 2N0 | quarry.***** | 1973 | $18,033,390 | 90 | N/A | N/A | N/A |
| 62 | Lavin Media INC | Canada | Vaughan | 6-6150 Highway 7 Suite 149 | Ontario | L4H 0R6 | N/A | 2020 | $17,760,837 | 100 | N/A | N/A | 12248816 |
| 63 | Agence Mirum Canada INC | Canada | Montréal | 1420-500 Rue Saint-jacques | Québec | H2Y 1S1 | twistimage.***** | 2014 | $17,031,535 | 85 | N/A | N/A | N/A |
| 64 | Kognitive Tech INC | Canada | Toronto | 200-60 Atlantic Ave | Ontario | M6K 1X9 | N/A | 2019 | $16,937,920 | 80 | N/A | N/A | N/A |
| 65 | Accessoires Pour Velos O.G.D. Ltee | Canada | Montréal | 10555 Boul Henri-bourassa O | Québec | H4S 1A1 | ogc.***** | 1978 | $16,937,920 | 80 | N/A | N/A | 0278726 |
| 66 | Quality Insertions LTD | Canada | Port Coquitlam | 2-1560 Broadway St | British Columbia | V3C 2M8 | N/A | 1984 | $16,937,920 | 80 | N/A | N/A | N/A |
| 67 | Gregg Distributors CO LTD | Canada | Saskatoon | 3066 Faithfull Ave | Saskatchewan | S7K 8H2 | greggdistributors.***** | 2010 | $16,937,920 | 80 | N/A | N/A | N/A |
| 68 | Animal Safety Publications | Canada | Moncton | 295 English Dr | New Brunswick | E1E 0J3 | N/A | 2018 | $16,937,920 | 80 | N/A | N/A | N/A |
| 69 | Dentsu Canada INC. | Canada | Toronto | 1 University Ave Fl 6 | Ontario | M5J 2P1 | N/A | 1995 | $16,029,680 | 80 | N/A | N/A | N/A |
| 70 | Elite Digital INC | Canada | Toronto | 5511 Steeles Ave W Suite 200 | Ontario | M9L 1S7 | elitedigitalagency.***** | 2015 | $15,879,300 | 75 | N/A | N/A | N/A |
| 71 | Adfarm Partnership | Canada | Calgary | 140 Quarry Park Blvd Se | Alberta | T2C 3G3 | adfarmonline.***** | 2002 | $15,628,938 | 78 | N/A | N/A | N/A |
| 72 | Proaction Groupe Conseils INC | Canada | Montréal | 100-257 Rue Sherbrooke E | Québec | H2X 1E3 | groupeproaction.***** | 2004 | $14,820,680 | 70 | N/A | N/A | N/A |
| 73 | Bcp Ltee | Canada | Montréal | 300-3530 Boul Saint-laurent | Québec | H2X 2V1 | bcp.***** | 1996 | $14,025,970 | 70 | N/A | N/A | N/A |
| 74 | Dentsu Creative INC | Canada | Toronto | 1 University Ave Fl 6 | Ontario | M5J 2P1 | isobar.***** | 2016 | $14,025,970 | 70 | N/A | N/A | 9690271 |
| 75 | Palm Communication Marketing INC | Canada | Montréal | 1253 Av Mcgill College | Québec | H3B 2Y5 | palmhavas.***** | 2005 | $14,025,970 | 70 | N/A | N/A | 4326920 |
| 76 | Cameron Advertising Displays LIMITED | Canada | Toronto | 12 Nantucket Blvd | Ontario | M1P 2N4 | camad.***** | 1955 | $13,762,060 | 65 | N/A | N/A | N/A |
| 77 | Utours INC | Canada | Toronto | 1000-477 Richmond St W | Ontario | M5V 3E7 | experiencediamond.***** | 2006 | $13,762,060 | 65 | N/A | N/A | N/A |
| 78 | Viral Nation INC | Canada | Mississauga | 400 - 2680 Skymark Ave | Ontario | L4W 5L6 | N/A | 2014 | $13,550,336 | 64 | N/A | N/A | N/A |
| 79 | Genesis Media INC | Canada | Toronto | 500-22 St Clair Ave E | Ontario | M4T 2S3 | genesismedia.***** | 1992 | $13,224,486 | 66 | N/A | N/A | N/A |
| 80 | Cmi Canada INC | Canada | Markham | 115 Idema Rd | Ontario | L3R 1A9 | communicorp.***** | 2008 | $13,024,115 | 65 | N/A | N/A | N/A |
| 81 | The Influence Agency INC | Canada | Toronto | 213 Sterling Rd Unit 214 | Ontario | M6R 2B2 | theinfluenceagency.***** | 2016 | $12,915,164 | 61 | N/A | N/A | N/A |
| 82 | Publicite Taxi Montreal INC | Canada | Montréal | 620-1435 Rue Saint-alexandre | Québec | H3A 2G4 | accidentsolution.***** | 1993 | $12,703,440 | 60 | N/A | N/A | N/A |
| 83 | Groupe Digitad INC | Canada | Montréal | 703-5605 Av de Gaspe | Québec | H2T 2A4 | digitad.***** | 2015 | $12,703,440 | 60 | N/A | N/A | N/A |
| 84 | Arrivals + Departures Media LIMITED | Canada | Halifax | 1809 Barrington St Suite 910 | Nova Scotia | B3J 3K8 | N/A | 1997 | $12,703,440 | 60 | N/A | N/A | N/A |
| 85 | Courage INC | Canada | Toronto | 507 King St E Suite 400 | Ontario | M5A 1M3 | N/A | 2022 | $12,703,440 | 60 | N/A | N/A | N/A |
| 86 | Slick Promotional Ideas LTD. | Canada | Mississauga | 10 Front St S | Ontario | L5H 2C4 | N/A | 1982 | $12,279,992 | 58 | N/A | N/A | 1347063 |
| 87 | Think Shift Advertising INC | Canada | Winnipeg | 109 James Ave | Manitoba | R3B 0N6 | thinkshiftinc.***** | 1997 | $12,222,631 | 61 | N/A | N/A | N/A |
| 88 | Traffik Brand Communications INC | Canada | Toronto | 301-559 College St | Ontario | M6G 1A9 | traffik.***** | 2015 | $12,022,260 | 60 | N/A | N/A | N/A |
| 89 | No Fixed Address INC | Canada | Toronto | 50 Carroll St | Ontario | M4M 3G3 | nofixedaddressinc.***** | 2016 | $12,022,260 | 60 | N/A | N/A | N/A |
| 90 | Major Tom Agency INC | Canada | Vancouver | 490-1090 Homer St | British Columbia | V6B 2W9 | majortom.***** | 2000 | $12,022,260 | 60 | N/A | N/A | N/A |
| 91 | Top Drawer Media CORP | Canada | Toronto | 2216 Queen St E | Ontario | M4E 1E9 | topdrawercreative.***** | 2015 | $11,856,544 | 56 | N/A | N/A | N/A |
| 92 | The Turn Lab INC | Canada | Toronto | 2216 Queen St E | Ontario | M4E 1E9 | topdrawercreative.***** | 2018 | $11,856,544 | 56 | N/A | N/A | N/A |
| 93 | 1222010 Ontario INC | Canada | Ottawa | 12-2000 Thurston Dr | Ontario | K1G 4K7 | akranmarketing.***** | 1997 | $11,644,820 | 55 | N/A | N/A | N/A |
| 94 | Zulu Alpha Kilo INC. | Canada | Toronto | 240 Logan Ave | Ontario | M4M 2N3 | zulualphakilo.***** | 2009 | $11,644,820 | 55 | N/A | N/A | 4532040 |
| 95 | Blakely INC | Canada | Aurora | 2-240 Industrial Pky S | Ontario | L4G 3V6 | blakelyassociates.***** | 2013 | $11,644,820 | 55 | N/A | N/A | N/A |
| 96 | Iprospect Canada INC | Canada | Toronto | 1 Av University | Ontario | M5J 2P1 | N/A | 2013 | $11,621,518 | 58 | N/A | N/A | N/A |
| 97 | Atstore Media INC | Canada | Toronto | 100 King St Suite 5700 | Ontario | M5X 1C7 | N/A | 2020 | $11,521,049 | 58 | N/A | N/A | N/A |
| 98 | Lg2 Quebec INC | Canada | Montréal | 100-4051 Rue Molson | Québec | H1Y 3L1 | lg2.***** | 2016 | $11,020,405 | 55 | N/A | N/A | N/A |
| 99 | Bryant, Fulton & Shee Advertising INC. | Canada | Vancouver | 300-455 Granville St | British Columbia | V6C 1T1 | N/A | 2001 | $11,009,648 | 52 | N/A | N/A | N/A |
| 100 | Lg2 Toronto INC | Canada | Toronto | 300-161 Liberty St | Ontario | M6K 3G3 | lg2.***** | 2014 | $10,820,034 | 54 | N/A | N/A | N/A |