| 1 | Sgs Canada INC | Canada | Mississauga | 204-6755 Mississauga Rd | Ontario | L5N 7Y2 | N/A | 2020 | $18,367,380,000 | 90,000 | N/A | N/A | 11782142 |
| 2 | Dynacare-Gamma Laboratory Partnership | Canada | Brampton | 115 Midair Crt | Ontario | L6T 5M3 | gamma-dynacare.***** | 1958 | $977,913,000 | 3,000 | N/A | N/A | N/A |
| 3 | Element Materials Technology Canada INC | Canada | Mississauga | 2599 Speakman Dr Suite 200,210 | Ontario | L5K 1B1 | element.***** | 2008 | $607,462,300 | 1,900 | N/A | N/A | N/A |
| 4 | Bureau Veritas Canada (2019) INC | Canada | Mississauga | 6740 Campobello Rd | Ontario | L5N 2L8 | bvna.***** | 2016 | $448,980,400 | 2,200 | N/A | N/A | 9559248 |
| 5 | Dermpath Medical Labs LTD | Canada | Edmonton | 200-10150 102nd St | Alberta | T5J 5E2 | dynalife.***** | 1995 | $423,762,300 | 1,300 | N/A | N/A | N/A |
| 6 | Dynalifedx | Canada | Edmonton | 200-10150 102 St Nw | Alberta | T5J 5E2 | dynalife.***** | 1995 | $391,165,200 | 1,200 | N/A | N/A | N/A |
| 7 | Canadian Standards Association | Canada | Toronto | 178 Rexdale Blvd | Ontario | M9W 1R3 | csagroup.***** | 1919 | $367,347,600 | 1,800 | N/A | N/A | 350893 |
| 8 | Acuren Group INC | Canada | Edmonton | 7450 18 St Nw | Alberta | T6P 1N8 | acuren.***** | 1986 | $351,688,700 | 1,100 | N/A | N/A | N/A |
| 9 | Als Canada LTD | Canada | North Vancouver | 2103 Dollarton Hwy | British Columbia | V7H 0A7 | alsglobal.***** | 1999 | $259,388,222 | 1,271 | N/A | N/A | N/A |
| 10 | Alpha Laboratories INC. | Canada | Toronto | 1262 Don Mills Rd | Ontario | M3B 2W7 | alphainc.***** | 1971 | $146,686,950 | 450 | N/A | N/A | 9130934 |
| 11 | Syneos Health Clinique INC | Canada | Québec | 2500 Rue Einstein | Québec | G1P 0A2 | monetudeinventiv.***** | 2020 | $146,686,950 | 450 | N/A | N/A | N/A |
| 12 | Irisndt CORP | Canada | Edmonton | 5311 86 St Nw | Alberta | T6E 5T8 | irisndt.***** | 1953 | $127,886,800 | 400 | N/A | N/A | 0156426 |
| 13 | Gestion Les Pros De La Photo (canada) INC | Canada | Montréal | 201-90 Rue Beaubien O | Québec | H2S 1V6 | lesprosdelaphoto.***** | 1994 | $122,109,230 | 254 | N/A | N/A | N/A |
| 14 | Middlesex London Health Unit | Canada | London | 50 King St Suite 101 | Ontario | N6A 5L7 | healthunit.***** | 1968 | $97,791,300 | 300 | N/A | N/A | N/A |
| 15 | Gamma North Peel LIMITED | Canada | Toronto | 300 Supertest Rd | Ontario | M3J 2M2 | N/A | 1976 | $97,791,300 | 300 | N/A | N/A | N/A |
| 16 | Gentox Laboratories INC | Canada | Markham | 1345 Denison St | Ontario | L3R 5V2 | idexx.***** | 2003 | $95,915,100 | 300 | N/A | N/A | N/A |
| 17 | West Coast Medical Imaging INC | Canada | North Vancouver | 203-828 Harbourside Dr | British Columbia | V7P 3R9 | westcoastmedicalimaging.***** | 2008 | $80,840,808 | 248 | N/A | N/A | N/A |
| 18 | Racing Forensics INC | Canada | Toronto | 2-3015 Kennedy Rd | Ontario | M1V 1E7 | racingforensics.***** | 2000 | $79,929,250 | 250 | N/A | N/A | N/A |
| 19 | Core Laboratories Canada LTD | Canada | Calgary | 2810 12 St Ne | Alberta | T2E 7P7 | corelab.***** | 1994 | $73,469,520 | 360 | N/A | N/A | N/A |
| 20 | Insight Medical Holdings LTD | Canada | Edmonton | 200 Meadowlark Shopping Ctr Nw | Alberta | T5R 5W9 | x-ray.***** | 1957 | $71,713,620 | 220 | N/A | N/A | N/A |
| 21 | Tgm Holdings LTD | Canada | Calgary | 115 17 Ave Sw | Alberta | T2S 0A1 | aurumgroup.***** | 1979 | $65,194,200 | 200 | N/A | N/A | N/A |
| 22 | Metro Testing & Engineering LTD | Canada | Burnaby | 401-6741 Cariboo Rd | British Columbia | V3N 4A3 | metrotesting.***** | 1987 | $63,943,400 | 200 | N/A | N/A | N/A |
| 23 | Powertech Labs INC | Canada | Surrey | 12388 88 Ave | British Columbia | V3W 7R7 | powertechlabs.***** | 1989 | $63,943,400 | 200 | N/A | N/A | N/A |
| 24 | Wentworth-Halton X-Ray And Ultrasound INC | Canada | Hamilton | 218-1 Young St | Ontario | L8N 1T8 | whxray.***** | 2010 | $55,415,070 | 170 | N/A | N/A | N/A |
| 25 | Space Maintainers Lab Canada LTD | Canada | Calgary | 115 17 Ave Sw | Alberta | T2S 0A1 | N/A | 1979 | $55,415,070 | 170 | N/A | N/A | N/A |
| 26 | Eurofins Environment Testing Canada Holding, INC. | Canada | Toronto | 1120 Finch Ave W Suite 200 | Ontario | M3J 3H7 | web.***** | 2016 | $54,351,890 | 170 | N/A | N/A | 13177289 |
| 27 | Underwriters Laboratories Of Canada | Canada | Toronto | 7 Underwriters Rd | Ontario | M1R 3A9 | ul.***** | 1920 | $54,351,890 | 170 | N/A | N/A | 0620459 |
| 28 | Bureau Veritas Commodities Canada LTD | Canada | Vancouver | 9050 Shaughnessy St | British Columbia | V6P 6E5 | acmelab.***** | 2014 | $51,020,500 | 250 | N/A | N/A | N/A |
| 29 | Mistras Services INC. | Canada | Lévis | 765 Rue de Saint-romuald | Québec | G6W 5M6 | mistrasgroup.***** | 1981 | $51,020,500 | 250 | N/A | N/A | 10041718 |
| 30 | 1389851 Ontario LIMITED | Canada | Hamilton | 218-1 Young St | Ontario | L8N 1T8 | whxray.***** | 2000 | $50,525,505 | 155 | N/A | N/A | N/A |
| 31 | Westman Regional Laboratory Services INC | Canada | Brandon | 1-150 Mctavish Ave E | Manitoba | R7A 7H8 | westmanlab.***** | 1974 | $48,895,650 | 150 | N/A | N/A | N/A |
| 32 | Qsl Quebec INC | Canada | Lévis | 765 Rue de Saint-romuald | Québec | G6W 5M6 | mistrasgroup.***** | 1990 | $47,957,550 | 150 | N/A | N/A | N/A |
| 33 | Les Technologies Mpb INC. | Canada | Pointe-claire | 151 Boul Hymus | Québec | H9R 1E9 | mpbcommunications.***** | 1976 | $47,957,550 | 150 | N/A | N/A | 167291 |
| 34 | Classic Dental Laboratories LTD | Canada | Calgary | 115 17 Ave Sw | Alberta | T2S 0A1 | aurumgroup.***** | 1996 | $45,635,940 | 140 | N/A | N/A | N/A |
| 35 | Certispec Services INC | Canada | Burnaby | 208-6741 Cariboo Rd | British Columbia | V3N 4A3 | certispec.***** | 1994 | $39,964,625 | 125 | N/A | N/A | N/A |
| 36 | Les Pros De La Photo (quebec) INC | Canada | Montréal | 9350 Av de L'Esplanade | Québec | H2N 1V6 | lesprosdelaphoto.***** | 1983 | $39,567,800 | 100 | N/A | N/A | N/A |
| 37 | Kmh Cardiology Centres Incorporated | Canada | Mississauga | 2075 Hadwen Rd | Ontario | L5K 2L3 | tinyurl.***** | 2004 | $39,116,520 | 120 | N/A | N/A | N/A |
| 38 | Services D'essais Intertek An Ltee | Canada | Montréal | 1829 32e Av | Québec | H8T 3J1 | N/A | 1995 | $38,366,040 | 120 | N/A | N/A | 3215334 |
| 39 | Sgs Axys Analytical Services LTD | Canada | Sidney | 2045 Mills Rd W | British Columbia | V8L 5X2 | axysanalytical.***** | 1979 | $37,726,606 | 118 | N/A | N/A | N/A |
| 40 | Shared Health INC | Canada | Winnipeg | 1502-155 Carlton St | Manitoba | R3C 3H8 | sharedhealthmb.***** | 2002 | $32,597,100 | 100 | N/A | N/A | N/A |
| 41 | Morgan Schaffer Ltee | Canada | Montréal | 150-225 Av Lafleur | Québec | H8R 3H2 | morganschaffer.***** | 2017 | $31,971,700 | 100 | N/A | N/A | N/A |
| 42 | Silliker Canada CO | Canada | Markham | 4-90 Gough Rd | Ontario | L3R 5V5 | silliker.***** | 2000 | $31,971,700 | 100 | N/A | N/A | N/A |
| 43 | Prairie Agricultural Machinery Institute | Canada | Humboldt | 2215 8 Ave | Saskatchewan | S0K 2A1 | pami.***** | 2001 | $31,971,700 | 100 | N/A | N/A | N/A |
| 44 | Surepoint Services INC | Canada | Grande Prairie | 11004 96 Ave | Alberta | T8V 3J5 | surepoint.***** | 2000 | $31,971,700 | 100 | N/A | N/A | N/A |
| 45 | Lineman's Testing Laboratories Of Canada LIMITED | Canada | Toronto | 46 Meridian Rd | Ontario | M9W 4Z7 | ltl.***** | 1958 | $25,577,360 | 80 | N/A | N/A | N/A |
| 46 | Inspectorate Exploration And Mining Services LTD | Canada | Richmond | 11620 Horseshoe Way Suite 200 | British Columbia | V7A 4V5 | pralab.***** | 2010 | $25,577,360 | 80 | N/A | N/A | N/A |
| 47 | Exova | Canada | Pointe-claire | 121 Boul Hymus | Québec | H9R 1E6 | exova.***** | 1992 | $23,469,600 | 100 | N/A | N/A | N/A |
| 48 | Spark Testing Services Canada INC | Canada | Oakville | 1337 North Service Rd E Suite 200 | Ontario | L6H 1A7 | sparkpowercorp.***** | 2016 | $22,380,190 | 70 | N/A | N/A | N/A |
| 49 | Eurofins Biopharma Product Testing Toronto, INC | Canada | Toronto | 1111 Flint Rd Suite 36 | Ontario | M3J 3C7 | eurofins.***** | 1983 | $22,032,800 | 100 | N/A | N/A | 9895493 |
| 50 | Buffalo Inspection Services (2005) INC | Canada | Edmonton | 3867 Roper Rd Nw | Alberta | T6B 3S5 | buffaloinspection.***** | 2024 | $22,032,800 | 100 | N/A | N/A | N/A |
| 51 | Paine, J. R. & Associates LTD | Canada | Edmonton | 17505 106 Ave Nw | Alberta | T5S 1E7 | jrp.***** | 1969 | $22,032,800 | 100 | N/A | N/A | N/A |
| 52 | 9523-7152 Quebec INC | Canada | Montréal | 206-4824 Ch de la Cote-des-neiges | Québec | H3V 1G4 | N/A | 2024 | $20,875,300 | 50 | N/A | N/A | N/A |
| 53 | 9089-1193 Quebec INC | Canada | Montréal | 1479 Rue Ottawa | Québec | H3C 1S9 | realbyfake.***** | 2000 | $20,875,300 | 50 | N/A | N/A | N/A |
| 54 | Car-Ber Testing Services INC | Canada | Point Edward | 911 Michigan Ave | Ontario | N7V 1H2 | carbertesting.***** | 2005 | $20,781,605 | 65 | N/A | N/A | N/A |
| 55 | Kashruth Council Of Canada | Canada | Toronto | 215 Ranee Ave | Ontario | M6A 0C7 | cor.***** | 2014 | $20,781,605 | 65 | N/A | N/A | 3784967 |
| 56 | Sterigenics Radiation Technologies Canada, INC | Canada | Port Coquitlam | 1425 Kebet Way | British Columbia | V3C 6L3 | iotron.***** | 2020 | $20,781,605 | 65 | N/A | N/A | N/A |
| 57 | Post-Prod Cmj Tech INC | Canada | Montréal | 5000 Rue D'Iberville Bureau 332 | Québec | H2H 2S6 | N/A | 2012 | $20,457,794 | 49 | N/A | N/A | N/A |
| 58 | Image Plus | Canada | Abbotsford | 104-31935 South Fraser Way | British Columbia | V2T 5N7 | canadapost.***** | 1999 | $19,783,900 | 50 | N/A | N/A | N/A |
| 59 | Moonvalley AI INC | Canada | Toronto | 1050 King St W | Ontario | M6K 0C7 | N/A | 2018 | $19,783,900 | 50 | N/A | N/A | N/A |
| 60 | Technicare Imaging LTD | Canada | Edmonton | 10924 119 St Nw | Alberta | T5H 3P5 | technicare.***** | 1986 | $19,783,900 | 50 | N/A | N/A | N/A |
| 61 | Citelab INC | Canada | Montréal | 201-80 Rue Queen | Québec | H3C 2N5 | visionglobale.***** | 1999 | $19,783,900 | 50 | N/A | N/A | N/A |
| 62 | London X-Ray Associates | Canada | London | 109-4053 Meadowbrook Dr | Ontario | N6L 1E9 | londonxray.***** | 1945 | $19,558,260 | 60 | N/A | N/A | N/A |
| 63 | Trillium Therapeutics Ulc | Canada | Mississauga | 2488 Dunwin Dr | Ontario | L5L 1J9 | trilliumtherapeutics.***** | 2004 | $19,558,260 | 60 | N/A | N/A | N/A |
| 64 | Microbix Biosystems INC | Canada | Mississauga | 265 Watline Ave | Ontario | L4Z 1P3 | microbix.***** | 1990 | $18,861,503 | 130 | N/A | N/A | N/A |
| 65 | Beyond Digital Imaging INC | Canada | Markham | 36 Apple Creek Blvd | Ontario | L3R 4Y4 | bdimaging.***** | 2017 | $17,805,510 | 45 | N/A | N/A | N/A |
| 66 | Labstat International INC | Canada | Kitchener | 262 Manitou Dr | Ontario | N2C 1L3 | labstat.***** | 2018 | $17,626,240 | 80 | N/A | N/A | N/A |
| 67 | Custom Colour Labs INC | Canada | Toronto | 5703 Steeles Ave W | Ontario | M9L 1S7 | customcolour.***** | 1973 | $17,014,154 | 43 | N/A | N/A | N/A |
| 68 | Colorfast CORPORATION | Canada | Edmonton | 6115 Gateway Blvd Nw | Alberta | T6H 2H3 | colorfast.***** | 1990 | $16,700,240 | 40 | N/A | N/A | N/A |
| 69 | 1387208 Ontario LTD | Canada | Toronto | 190 Milner Ave | Ontario | M1S 5B6 | sclimaging.***** | 1999 | $16,700,240 | 40 | N/A | N/A | N/A |
| 70 | Labopro P.S. INC | Canada | Québec | 115-1405 Av Saint-jean-baptiste | Québec | G2E 5K2 | photodelacapitale.***** | 1985 | $16,700,240 | 40 | N/A | N/A | N/A |
| 71 | Electronic Warfare Associates - Canada, LTD. | Canada | Ottawa | 200-1223 Michael St N | Ontario | K1J 7T2 | intertek.***** | 2016 | $16,305,567 | 51 | N/A | N/A | 2347482 |
| 72 | Silvano Color Laboratories LIMITED | Canada | Toronto | 355 Weston Rd | Ontario | M6N 4Y7 | silvanoimaging.***** | 2004 | $15,865,228 | 38 | N/A | N/A | N/A |
| 73 | Pracs Institute Canada B.C. LTD. | Canada | Mississauga | 4520 Dixie Rd | Ontario | L4W 1N2 | N/A | 2012 | $15,609,600 | 200 | N/A | N/A | N/A |
| 74 | Biron Laboratoire Medical INC | Canada | Brossard | 4105 Boul Matte | Québec | J4Y 2P4 | biron.***** | 1993 | $15,141,312 | 194 | N/A | N/A | N/A |
| 75 | Triquest Nondestructive Testing CORP | Canada | Calgary | 7425 107 Ave Se | Alberta | T2C 5N6 | triquestndt.***** | 2010 | $14,321,320 | 65 | N/A | N/A | N/A |
| 76 | A B C Photocolour Products LTD | Canada | Vancouver | 1618 4th Ave W | British Columbia | V6J 1L9 | abcphoto.***** | 1966 | $13,057,374 | 33 | N/A | N/A | N/A |
| 77 | Trend Colour Labs INC | Canada | Toronto | 1194d Caledonia Rd | Ontario | M6A 2W5 | trendonline.***** | 1983 | $12,525,180 | 30 | N/A | N/A | N/A |
| 78 | 9087-3928 Quebec INC | Canada | Montréal | 2990 Rue Remembrance | Québec | H8S 1X8 | N/A | 1989 | $12,525,180 | 30 | N/A | N/A | N/A |
| 79 | Laboratoire Couleur Universel INC | Canada | Laval | 810 Rue Salaberry | Québec | H7S 1H3 | pagesjaunes.***** | 1969 | $12,525,180 | 30 | N/A | N/A | N/A |
| 80 | 24184863 Quebec INC | Canada | Québec | 150-2717 Av Watt | Québec | G1P 3X3 | copiexpress.***** | 1986 | $12,525,180 | 30 | N/A | N/A | N/A |
| 81 | Ontario Nutri Lab INC | Canada | Fergus | 3-6589 First Line | Ontario | N1M 2W4 | N/A | 2006 | $11,734,800 | 50 | N/A | N/A | N/A |
| 82 | Reena Group Of Companies INC | Canada | Mississauga | 6733 Kitimat Rd | Ontario | L5N 1W3 | thereenagroup.***** | 2018 | $11,734,800 | 50 | N/A | N/A | N/A |
| 83 | Torngats Services Techniques INC | Canada | Laval | 945 Rue Michelin | Québec | H7L 5B6 | facebook.***** | 2010 | $11,734,800 | 50 | N/A | N/A | N/A |
| 84 | True North Imaging INC | Canada | Thornhill | 120-7330 Yonge St | Ontario | L4J 7Y7 | truenorthimaging.***** | 1982 | $11,707,200 | 150 | N/A | N/A | N/A |
| 85 | Caro Analytical Services LTD | Canada | Richmond | 110-4011 Viking Way | British Columbia | V6V 2K9 | caro.***** | 2013 | $11,500,104 | 49 | N/A | N/A | N/A |
| 86 | Cgl-Grs Swiss Canadian Gem Lab INC | Canada | Vancouver | 510-409 Granville St | British Columbia | V6C 1T2 | cglworld.***** | 2014 | $11,030,712 | 47 | N/A | N/A | N/A |
| 87 | Labtest Certification INC. | Canada | Delta | 205-8291 92 St | British Columbia | V4G 0A4 | labtestcert.***** | 2003 | $11,016,400 | 50 | N/A | N/A | N/A |
| 88 | Laboratoires Neopharm INC | Canada | Blainville | 865 Boul Michele-bohec | Québec | J7C 5J6 | neopharmlabs.***** | 2013 | $11,016,400 | 50 | N/A | N/A | 8685037 |
| 89 | Mdl Énergie INC | Canada | Terrebonne | 1080 Rue Levis | Québec | J6W 4L1 | mdlenergie.***** | 2024 | $11,016,400 | 50 | N/A | N/A | N/A |
| 90 | Western Inspection LTD | Canada | Calgary | 3231 58 Ave Se | Alberta | T2C 0B4 | westerninspection.***** | 1993 | $11,016,400 | 50 | N/A | N/A | N/A |
| 91 | Silliker Canada CO. LTD | Canada | Burnaby | 106-8255 North Fraser Way | British Columbia | V3N 0B9 | merieuxnutrisciences.***** | 2021 | $11,016,400 | 50 | N/A | N/A | N/A |
| 92 | Fonds Au Benefice Des Personnes Incarcerees De L'etablissement De Detention De Quebec | Canada | Baie-comeau | 500 Rue de la Faune | Québec | G4Z 1N1 | N/A | 1988 | $10,796,072 | 49 | N/A | N/A | N/A |
| 93 | Waters Ltee | Canada | Brossard | 330-9935 Rue de Chateauneuf | Québec | J4Z 3V4 | waters.***** | 1980 | $10,796,072 | 49 | N/A | N/A | N/A |
| 94 | A & L Biological INC | Canada | London | 2136 Jetstream Rd | Ontario | N5V 3P5 | alcanada.***** | 2008 | $10,561,320 | 45 | N/A | N/A | N/A |
| 95 | Davroc Testing Laboratories INC | Canada | Brampton | 21-2051 Williams Pky | Ontario | L6S 5T3 | davroc.***** | 1991 | $10,561,320 | 45 | N/A | N/A | N/A |
| 96 | Cardiology Plus (calgary) INC | Canada | Calgary | 306-803 1 Ave Ne | Alberta | T2E 7C5 | totalcardiology.***** | 1990 | $10,561,320 | 45 | N/A | N/A | N/A |
| 97 | Cavalcade Colour Lab INC | Canada | Huntsville | 34 King William St | Ontario | P1H 1G5 | cavalcade.***** | 1979 | $10,437,650 | 25 | N/A | N/A | N/A |
| 98 | Novonix Battery Technology Solutions INC | Canada | Halifax | 177 Bluewater Rd | Nova Scotia | B4B 1H1 | novonixgroup.***** | 2013 | $9,914,760 | 45 | N/A | N/A | 8513422 |
| 99 | Ontario Film Laboratories LIMITED | Canada | North Bay | 191 Lakeshore Dr | Ontario | P1A 2B4 | photometro.***** | 1946 | $9,891,950 | 25 | N/A | N/A | N/A |
| 100 | Prismaflex Incorporated | Canada | Mississauga | 1645 Queensway E | Ontario | L4X 3A3 | prismaflex.***** | 1999 | $9,891,950 | 25 | N/A | N/A | N/A |