| ATLANTIS SEAFARMS LTD. | — | BC0286457 | 1984-12-20 | Inactive | — |
| ATLANTIS SECURITY INC. | — | BC1150230 | 2018-01-24 | Inactive | — |
| ATLANTIS SECURITY INC. | — | BC0803170 | 2007-09-20 | Inactive | — |
| ATLANTIS SECURITY SERVICES INC. | — | A0125238 | 2022-11-08 | Inactive | — |
| ATLANTIS SKYFLIGHT PRODUCTIONS INC. | — | A0025235 | 1986-11-18 | Inactive | — |
| ATLANTIS SPA & FITNESS LTD. | — | BC0458650 | 1993-11-23 | Inactive | — |
| ATLANTIS SPAS LIMITED | — | BC0992209 | 2014-01-28 | Inactive | — |
| ATLANTIS SPORTING GOODS LTD. | — | BC0332232 | 1987-08-24 | Inactive | — |
| ATLANTIS STEAM CLEANING | — | FM0030034 | 1979-02-22 | Active | — |
| ATLANTIS STONE | — | FM0664511 | 2015-07-02 | Active | — |
| ATLANTIS SUBMARINES (55 WEST 8TH) INC. | — | BC0281935 | 1984-08-27 | Inactive | — |
| ATLANTIS SUBMARINES (INTERNATIONAL HOLDINGS), INC. | — | BC0989200 | 2014-01-01 | Active | — |
| ATLANTIS SUBMARINES (INTERNATIONAL HOLDINGS), INC. | — | BC0429917 | 1992-07-31 | Inactive | — |
| ATLANTIS SUBMARINES INTERNATIONAL, INC. | — | BC1571159 | 2026-01-05 | Active | — |
| ATLANTIS SUBMARINES INTERNATIONAL, INC. | — | BC0270687 | 1983-10-31 | Inactive | — |
| ATLANTIS TAEKWONDO | — | FM0614988 | 2013-08-22 | Active | — |
| ATLANTIS TAEKWONDO SOCIETY | — | S0066875 | 2017-02-09 | Inactive | — |
| ATLANTIS TAX AND ACCOUNTING SERVICE | — | FM0479105 | 2008-05-31 | Active | — |
| ATLANTIS TECHNOLOGIES INC. | — | BC0696218 | 2004-05-28 | Inactive | — |
| ATLANTIS TEXTILES TRADING CORPORATION | — | BC0331569 | 1987-08-05 | Inactive | — |
| ATLANTIS THERAPIES | — | FM0470190 | 2008-02-11 | Active | — |
| ATLANTIS TILE CO. | — | FM0091633 | 1988-10-24 | Active | — |
| ATLANTIS TOWING | — | FM0215176 | 1997-02-28 | Active | — |
| ATLANTIS TOWING & REPAIRS LTD. | — | BC0539942 | 1997-04-02 | Inactive | — |
| ATLANTIS TRADING | — | FM0373207 | 2004-05-27 | Active | — |
| ATLANTIS TRADING LTD. | — | BC1467804 | 2024-02-26 | Active | — |
| ATLANTIS TRANSPORTATION SERVICES INC. | — | A0046327 | 1997-12-17 | Active | — |
| ATLANTIS TRANSPORTATION SERVICES INC. | — | A0033777 | 1991-06-14 | Inactive | — |
| ATLANTIS TREE SALES INC. | — | BC0549067 | 1997-08-22 | Inactive | — |
| ATLANTIS UNDERWATER FILMS | — | FM0097085 | 1989-05-03 | Active | — |
| ATLANTIS VENTURES | — | FM0295936 | 2001-02-21 | Active | — |
| ATLANTIS VENTURES LTD. | — | BC0327443 | 1987-05-29 | Inactive | — |
| ATLANTIS VENTURES LTD. | — | BC0656944 | 2002-10-24 | Inactive | — |
| ATLANTIS VISIONS | — | FM0527238 | 2010-04-20 | Active | — |
| ATLANTIS WATER PROOFING | — | FM0235769 | 1998-03-17 | Active | — |
| ATLANTIS WATERBEDS LTD. | — | BC0177648 | 1978-07-10 | Inactive | — |
| ATLANTIS WATERSLIDES & RECREATIONS LTD. | — | BC0344162 | 1988-04-21 | Inactive | — |
| ATLANTIS WATERSLIDES (2005) LTD. | — | BC0901834 | 2011-02-01 | Inactive | — |
| ATLANTIS WATERSLIDES (2005) LTD. | — | BC0743750 | 2005-12-20 | Inactive | — |
| ATLANTIS WELDING & MANUFACTURING LTD. | — | BC0443704 | 1993-03-29 | Inactive | — |
| ATLANTIS WHALEWATCHING & ENTERTAINMENT | — | FM0303595 | 2001-06-14 | Active | — |
| ATLANTIS WHARFAGE ASSOCIATION | — | S0037727 | 1997-12-17 | Active | — |
| ATLANTIS WHOLESALE LANDSCAPE SUPPLY INC. | — | BC0912169 | 2011-06-03 | Inactive | — |
| ATLANTIS WHOLESALE LTD. | — | BC0290500 | 1985-03-29 | Inactive | — |
| ATLANTIS WORLD LOGISTICS | — | FM0747270 | 2018-05-15 | Active | — |
| ATLANTIS YACHTS INCORPORATED | — | BC0537459 | 1997-02-26 | Inactive | — |
| ATLANTIS YOUTH OVERSEAS TRAVEL LTD. | — | BC0116672 | 1973-03-14 | Inactive | — |
| ATLANTIS1.COM ONLINE | — | FM0290524 | 2000-11-01 | Active | — |
| ATLANTIX RELAXATIONS INCORPORATED | — | BC0539335 | 1997-03-21 | Inactive | — |
| ATLANTUS COMMUNICATIONS | — | FM0348598 | 2003-05-30 | Active | — |
| ATLANTUS TRADING CO. LTD. | — | BC0257236 | 1982-11-29 | Inactive | — |
| ATLAPAC INTERNATIONAL LTD. | — | BC0097286 | — | Inactive | — |
| ATLAS & CO | — | FM1063418 | 2024-12-24 | Active | — |
| ATLAS & HUNTINGDON DEVELOPMENT SYNDICATE LIMITED | — | QE0000096 | — | Inactive | — |
| ATLAS & ORION CONSULTING LTD. | — | BC1500778 | 2024-09-07 | Active | — |
| ATLAS & SIMPLEX FLOOR CO. LTD. | — | BC0143919 | 1975-12-24 | Inactive | — |
| ATLAS 1909 ADVENTURES INC | — | BC1199189 | 2019-02-28 | Inactive | — |
| ATLAS 2000 HOLDINGS LTD. | — | BC0824699 | 2008-05-09 | Inactive | — |
| ATLAS 360 PRODUCE LTD. | — | BC1368334 | 2022-06-20 | Active | — |
| ATLAS 41 FITNESS PUBLISHING | — | FM0319285 | 2002-03-14 | Active | — |
| ATLAS 604 ORGANICS LTD. | — | BC1334480 | 2021-11-23 | Inactive | — |
| ATLAS 888 REAL ESTATE HOLDINGS LTD. | — | BC1378851 | 2022-09-14 | Active | — |
| ATLAS ABATEMENT SOLUTION LTD. | — | BC1567724 | 2025-12-12 | Active | — |
| ATLAS ABC CANADA ULC | — | A0062787 | 2004-07-14 | Active | — |
| ATLAS ACADEMY EDUCATION LIMITED | — | BC1570040 | 2025-12-27 | Active | — |
| ATLAS ACCOUNTING AND CONSULTING SERVICES INC. | — | BC1225848 | 2019-10-04 | Active | — |
| ATLAS ACCOUNTING SERVICES | — | FM0284479 | 2000-07-13 | Active | — |
| ATLAS ACE CONSTRUCTION CONTRACTING | — | FM0890908 | 2022-09-29 | Active | — |
| ATLAS ACTIVE WEAR CO. | — | FM0295380 | 2001-02-12 | Active | — |
| ATLAS ACTIVE WEAR CO. LTD. | — | BC0645841 | 2002-04-17 | Inactive | — |
| ATLAS ACTIVE WEAR ENTERPRISES LTD. | — | BC0892140 | 2010-10-05 | Inactive | — |
| ATLAS AGENCIES | — | FM0073248 | 1986-10-29 | Active | — |
| ATLAS AGENCIES LTD. | — | BC0058560 | — | Inactive | — |
| ATLAS AGENCIES. IMPORT-EXPORT | — | FM0030956 | 1979-06-06 | Active | — |
| ATLAS AI CONSULTING CORP. | — | BC1590633 | 2026-05-14 | Active | — |
| ATLAS AIR INDUSTRIES INC. | — | A0094593 | 2015-02-17 | Inactive | — |
| ATLAS AIR SYSTEM | — | FM0331086 | 2002-09-23 | Inactive | — |
| ATLAS AIRCRAFT MAINTENANCE LTD. | — | BC1376102 | 2022-08-23 | Active | — |
| ATLAS AIRCRAFT SERVICES LTD. | — | BC0098313 | — | Inactive | — |
| ATLAS ALARMS LANGLEY LTD. | — | BC0511137 | 1996-01-04 | Active | — |
| ATLAS ALARMS LTD. | — | BC0217842 | 1980-10-08 | Active | — |
| ATLAS ALARMS SYSTEMS LTD. | — | BC1056780 | 2015-11-27 | Active | — |
| ATLAS ALLIANCE DELIVERY LTD. | — | BC0692671 | 2004-04-15 | Inactive | — |
| ATLAS ALLIANCE IMMIGRATION LTD. | — | A0084559 | 2011-10-28 | Inactive | — |
| ATLAS ALLIANCE LTD. | — | BC1563417 | 2025-11-17 | Active | — |
| ATLAS ALLOYS | — | FM0012695 | 1973-08-31 | Active | — |
| ATLAS ALLOYS HOLDINGS LIMITED | — | A0012212 | 1975-12-03 | Inactive | — |
| ATLAS ALLOYS INC. ALLIAGES ATLAS INC. | — | A0042747 | — | Inactive | — |
| ATLAS ALTERA | — | FM0869447 | 2022-02-03 | Active | — |
| ATLAS ALUMINUM CO. | — | FM0011509 | 1973-02-19 | Active | — |
| ATLAS ALUMINUM CO. LTD. | — | BC0362326 | 1989-03-23 | Inactive | — |
| ATLAS ALUMINUM PRODUCTS LTD. | — | BC0340352 | 1988-02-08 | Inactive | — |
| ATLAS ALUMINUM WELDING LTD. | — | BC0078654 | 1968-03-18 | Inactive | — |
| ATLAS ANCHOR SYSTEMS (B.C.) LTD. | — | BC0442527 | 1993-03-08 | Active | — |
| ATLAS AND ASHTON INDUSTRIES LTD. | — | BC1253364 | 2020-06-15 | Active | — |
| ATLAS AND IVORY HOME | — | FM0729368 | 2017-09-27 | Active | — |
| ATLAS AND THE ELF | — | FM0640776 | 2014-08-15 | Active | — |
| ATLAS ANIMAL HOSPITAL | — | FM0797088 | 2020-01-22 | Active | — |
| ATLAS ANIMAL HOSPITAL AND EMERGENCY VANCOUVER LTD. | — | BC1137850 | 2017-10-17 | Active | — |
| ATLAS APOTHECA HOLDINGS INC. | — | BC1585541 | 2026-04-08 | Active | — |
| ATLAS APPAREL | — | FM0706246 | 2017-01-03 | Active | — |
| ATLAS APPAREL | — | FM0888770 | 2022-08-23 | Inactive | — |
| ATLAS APPLIANCE COMPANY LIMITED | — | BC0023896 | — | Inactive | — |
| ATLAS APPLIANCES SERVICE | — | FM0313617 | 2001-12-10 | Active | — |
| ATLAS APPLIANCES SERVICE LTD. | — | BC0679350 | 2003-10-16 | Inactive | — |
| ATLAS APPRAISALS LTD. | — | BC0185673 | 1979-01-25 | Active | — |
| ATLAS APRONS INC. | — | BC1110797 | 2017-03-13 | Inactive | — |
| ATLAS ARCHAEOLOGY AND HERITAGE RESEARCH LTD. | — | BC1239601 | 2020-02-04 | Active | — |
| ATLAS ASBESTOS COMPANY, LIMITED | — | A0004275 | — | Inactive | — |
| ATLAS ASPHALT REPAIR | — | FM0886076 | 2022-07-16 | Active | — |
| ATLAS ASSET MANAGEMENT INC. GESTION DE L'ACTIF ATLAS INC. | — | A0034526 | 1991-11-07 | Inactive | — |
| ATLAS ASSURANCE COMPANY LIMITED | — | LIC0000344 | — | Inactive | — |
| ATLAS ATHLETICS INC. | — | BC0764900 | 2006-07-31 | Active | — |
| ATLAS AUCTIONS LTD. | — | BC0391882 | 1990-08-13 | Inactive | — |
| ATLAS AUTO BODY (ENTERPRISE) LTD. | — | BC1199400 | 2019-03-01 | Inactive | — |
| ATLAS AUTO BODY LTD. | — | BC1177863 | 2018-08-30 | Active | — |
| ATLAS AUTO GLASS | — | FM0351788 | 2003-07-17 | Active | — |
| ATLAS AUTO GLASS | — | FM0745588 | 2018-04-24 | Inactive | — |
| ATLAS AUTO GROUP LTD. | — | BC1237487 | 2020-01-16 | Active | — |
| ATLAS AUTO WRECKERS LTD. | — | BC0042214 | 1958-07-25 | Inactive | — |
| ATLAS AUTOMOTIVE LTD. | — | BC0855718 | 2009-06-30 | Inactive | — |
| ATLAS AVIATION LTD. | — | BC0432190 | 1992-09-11 | Inactive | — |
| ATLAS AVIATION LTD. | — | BC0174061 | 1978-04-20 | Inactive | — |
| ATLAS AWNING CO. LTD. | — | BC0286252 | 1984-12-17 | Inactive | — |
| ATLAS BACK OFFICE SOLUTIONS INC. | — | BC0523772 | 1996-07-16 | Active | — |
| ATLAS BAILIFF SERVICE LTD. | — | BC0049303 | — | Inactive | — |
| ATLAS BARBER SHOP | — | FM0080830 | 1987-08-19 | Active | — |
| ATLAS BILLBOARDS | — | FM0340968 | 2003-02-19 | Active | — |
| ATLAS BIRD SOLUTIONS | — | FM0701186 | 2016-10-19 | Active | — |
| ATLAS BISTRO | — | FM0165298 | 1994-08-15 | Active | — |
| ATLAS BLACKCAR SERVICE INC. | — | BC1503272 | 2024-09-23 | Active | — |
| ATLAS BOBCAT | — | FM0777066 | 2019-05-14 | Active | — |
| ATLAS BOBCAT | — | FM0477238 | 2008-05-07 | Active | — |
| ATLAS BODYKNEADS & MASSAGE LTD. | — | BC1036878 | 2015-05-19 | Inactive | — |
| ATLAS BRACE EUROPE | — | FM0700899 | 2016-10-17 | Active | — |
| ATLAS BRACE TECHNOLOGIES INCORPORATED | — | BC0908511 | 2011-04-18 | Active | — |
| ATLAS BRAIN HEALTH | — | FM1048953 | 2024-06-17 | Active | — |
| ATLAS BRAKE AND MUFFLER | — | FM0108262 | 1990-06-04 | Active | — |
| ATLAS BRAND MANAGEMENT | — | FM0504060 | 2009-06-03 | Active | — |
| ATLAS BROKER SERVICES LTD. | — | BC1287132 | 2021-02-02 | Active | — |
| ATLAS BUIDERS SUPPLIES LIMITED | — | BC0012777 | — | Inactive | — |
| ATLAS BUILDING MAINTENANCE | — | FM0785280 | 2019-08-19 | Active | — |
| ATLAS BUILDING MAINTENANCE (1979) LTD. | — | BC0197661 | 1979-09-27 | Inactive | — |
| ATLAS BUILDING MAINTENANCE LTD. | — | BC0594209 | 1999-10-18 | Inactive | — |
| ATLAS BUILDING MAINTENANCE SERVICE | — | FM0188195 | 1995-10-16 | Active | — |
| ATLAS BUILDING SUPPLIES LIMITED | — | BC0109104 | 1972-05-18 | Inactive | — |
| ATLAS BUILDING SUPPLIES LTD. | — | BC0023374 | — | Inactive | — |
| ATLAS BUILDING SYSTEMS LTD. | — | BC1119866 | 2017-05-23 | Active | — |
| ATLAS BULLION AND CURRENCY EXCHANGE LTD. | — | BC0929680 | 2012-01-09 | Inactive | — |
| ATLAS BURNER SERVICE LTD. | — | BC0078563 | — | Inactive | — |
| ATLAS BUSINESS SERVICE LTD. | — | BC0029299 | — | Inactive | — |
| ATLAS BUSINESS SERVICES | — | FM0224449 | 1997-07-31 | Active | — |
| ATLAS BUSINESS SERVICES . | — | FM0431319 | 2006-08-16 | Active | — |
| ATLAS BUSINESS SERVICES LTD. | — | BC0786543 | 2007-03-26 | Active | — |
| ATLAS CABINETS & FURNITURE LTD. | — | BC0152626 | 1976-09-10 | Inactive | — |
| ATLAS CAFE LTD. | — | BC0627456 | 2001-05-10 | Active | — |
| ATLAS CANADA ENTERPRISES LTD. | — | BC0335582 | 1987-10-30 | Inactive | — |
| ATLAS CANADA TECHNOLOGIES GROUP INC. | — | BC0941987 | 2012-06-01 | Inactive | — |
| ATLAS CANNING COMPANY LIMITED LIABILITY | — | QD0000245 | — | Inactive | — |
| ATLAS CAPITAL CORPORATION | — | BC0103115 | 1971-09-27 | Active | — |
| ATLAS CAPITAL GROUP LTD. | — | BC0415438 | 1991-11-18 | Active | — |
| ATLAS CAPITAL INC. | — | A0099786 | 2016-08-16 | Active | — |
| ATLAS CARBON & RIBBON WESTERN | — | FM0051025 | 1983-12-20 | Active | — |
| ATLAS CARBON & RIBBON WESTERN LTD. | — | BC0197216 | 1979-09-19 | Inactive | — |
| ATLAS CARGO FORWARDER AND TRADING SERVICES | — | FM0248838 | 1998-10-29 | Active | — |
| ATLAS CARGO INTERNATIONAL OF CANADA INC. | — | BC0581101 | 1999-03-05 | Inactive | — |
| ATLAS CARPET & DRAPE CLEANERS | — | FM0099766 | 1989-08-04 | Active | — |
| ATLAS CARPET COMPANY LTD. | — | BC0193902 | 1979-07-12 | Inactive | — |
| ATLAS CARPET INSTALLATIONS LTD. | — | BC0074368 | — | Inactive | — |
| ATLAS CEDAR DIGITAL BUSINESS SERVICES LIMITED | — | BC1410434 | 2023-04-13 | Inactive | — |
| ATLAS CHAIN COMPANY LTD. | — | BC0063850 | — | Inactive | — |
| ATLAS CHAIN COMPANY LTD. | — | BC0840501 | 2008-12-01 | Inactive | — |
| ATLAS CHANDLERY & MARINE EQUIPMENT INC. | — | BC0986542 | 2013-11-26 | Inactive | — |
| ATLAS CHEMICAL INDUSTRIES, CANADA, LTD. | — | A0004674 | — | Inactive | — |
| ATLAS CHIROPRACTIC INC. | — | BC0583465 | 1999-04-14 | Active | — |
| ATLAS CITY FIRE SUPPLIES | — | FM0651939 | 2015-01-29 | Active | — |
| ATLAS CLAY PRODUCTS LIMITED | — | BC0009286 | — | Inactive | — |
| ATLAS CLEANING | — | FM0634102 | 2014-05-15 | Inactive | — |
| ATLAS CLEANING SERVICES | — | FM0154779 | 1994-01-17 | Active | — |
| ATLAS CLEANING SERVICES | — | FM0215720 | 1997-03-10 | Active | — |
| ATLAS CLINICAL COUNSELLING SERVICES | — | FM0806378 | 2020-05-16 | Active | — |
| ATLAS CLOUD ACCOUNTANTS | — | FM0851249 | 2021-06-28 | Active | — |
| ATLAS CLOUD ENTERPRISES (2013) LTD. | — | BC0977914 | 2013-08-15 | Active | — |
| ATLAS CLOUD ENTERPRISES INC. | — | A0079477 | 2010-02-26 | Inactive | — |
| ATLAS COALS LTD. | — | A0010926 | 1973-07-19 | Inactive | — |
| ATLAS COLD LOGISTICS | — | FM0319047 | 2002-03-12 | Active | — |
| ATLAS COLD STORAGE (BRITISH COLUMBIA) LIMITED | — | A0051282 | — | Inactive | — |
| ATLAS COLD STORAGE (BRITISH COLUMBIA) LIMITED | — | A0048394 | — | Inactive | — |
| ATLAS COLD STORAGE CANADA LIMITED/ENTREPOT FRIGORIFIQUE ATLAS CANADA LIMITEE | — | A0055763 | 2001-11-20 | Inactive | — |
| ATLAS COLD STORAGE CANADA LIMITED/ENTREPOT FRIGORIFIQUE ATLAS CANADA LIMITEE | — | A0054899 | — | Inactive | — |
| ATLAS COLD STORAGE MIDWEST LIMITED | — | A0069553 | 2006-11-28 | Inactive | — |
| ATLAS COLLECTIVE INCORPORATED | — | BC1572890 | 2026-01-15 | Active | — |
| ATLAS COMMUNICATION TECHNOLOGIES | — | FM0702112 | 2016-11-01 | Active | — |
| ATLAS COMMUNITY COLLEGE LTD. | — | BC1452779 | 2023-12-01 | Active | — |
| ATLAS COMMUNITY INC. | — | BC1304004 | 2021-05-06 | Inactive | — |
| ATLAS COMPANY GENERAL WHOLESALER | — | FM0117396 | 1991-04-05 | Active | — |
| ATLAS COMPLETE JANITORIAL SERVICES | — | FM0158791 | 1994-04-15 | Active | — |
| ATLAS COMPONENTS GROUP ACQUISITION INC. | — | BC1316525 | 2021-07-22 | Inactive | — |
| ATLAS COMPONENTS GROUP ACQUISITION INC. | — | BC1318990 | 2021-08-09 | Active | — |
| ATLAS COMPUTER SYSTEMS 2000 LTD. | — | BC0267152 | 1983-07-28 | Inactive | — |