| DSCS Enterprises Inc. | — | 629318 | — | Active | |
| DSDoucet Consultants Ltée. | — | 716027 | — | Active | |
| DSF CONSULTING | — | 330165 | — | Dissolved | |
| DSF Investissements | — | 669204 | — | Active | |
| DSF TRANSPORT LTÉE | — | 677391 | — | Active | |
| DSH | — | 697964 | — | Active | |
| DSH INVESTMENTS LTD. | — | 501269 | — | Active | |
| DSJT CONSULTING SERVICES | — | 340572 | — | Dissolved | |
| DSJohnson Holdings Ltd. | — | 711558 | — | Active | |
| DSK Electrical & Controls Ltd. | — | 766586 | — | Active | |
| DSL ENGINEERING 2010 INC. | — | 654447 | — | Active | |
| DSL Investments Inc. | — | 752003 | — | Active | |
| DSL Investments Inc. | — | 662478 | — | Merged | |
| DSL PROPERTIES LTD. | — | 18955 | — | Dissolved | |
| DSM CANISTER, INC. | — | 704584 | — | Dissolved | |
| DSM ENTERPRISES LTD. | — | 53743 | — | Merged | |
| DSM EQUIPMENT | — | 350913 | — | Dissolved | |
| DSM Enterprises Ltd. | — | 622970 | — | Dissolved | |
| DSM Janitorial & Maintenance | — | 623832 | — | Dissolved | |
| DSM Marketing Group | — | 639245 | — | Dissolved | |
| DSM NUTRITIONAL PRODUCTS CANADA INC. | — | 675249 | — | Dissolved | |
| DSM Nutritional Products Canada Inc. | — | 610963 | — | Merged | |
| DSN REAL ESTATE CORP. | — | 746122 | — | Dissolved | |
| DSO Professional Services Corporation | — | 606851 | — | Merged | |
| DSP Creative Solutions | — | 732459 | — | Dissolved | |
| DSP HOLDINGS INC. | — | 42310 | — | Dissolved | |
| DSR Controls Inc. | — | 717090 | — | Active | |
| DSRC HOLDINGS & LEASING INC. | — | 10614 | — | Dissolved | |
| DSS Atlantic | — | 620465 | — | Active | |
| DSS BURGESS HOLDINGS INC. | — | 728710 | — | Active | |
| DSS Canada | — | 620468 | — | Active | |
| DSS Homemade Selections | — | 777684 | — | Active | |
| DSS Properties Inc. | — | 754151 | — | Active | |
| DSS Sustainable Solutions Canada Inc. | — | 724302 | — | Active | |
| DSSG CANADA | — | 676222 | — | Dissolved | |
| DST Service & Repair | — | 657980 | — | Dissolved | |
| DST Service & Repair Inc. | — | 658747 | — | Active | |
| DSTV Express Ltd. | — | 760033 | — | Active | |
| DSV AIR & SEA INC./DSV AIR ET MER INC. | — | 778456 | — | Active | |
| DSV HAULING LTD. | — | 664424 | — | Dissolved | |
| DSW Designer Shoe Warehouse | — | 708215 | — | Active | |
| DT & TM Kopacz Holdings Ltd. | — | 677205 | — | Dissolved | |
| DT AVIATION | — | 697837 | — | Active | |
| DT CANADA INC. | — | 500631 | — | Dissolved | |
| DT COMPOSITE | — | 658498 | — | Dissolved | |
| DT Canadian Holdings, LLC | — | 647437 | — | Dissolved | |
| DT Contracting | — | 728339 | — | Active | |
| DT DIRECT INC. | — | 708135 | — | Dissolved | |
| DT JARDINE HOLDINGS LTD. | — | 723637 | — | Active | |
| DT Multimedia | — | 651204 | — | Dissolved | |
| DT PIZZA | — | 647512 | — | Dissolved | |
| DT Properties | — | 615887 | — | Dissolved | |
| DT Roof Inspection | — | 655647 | — | Dissolved | |
| DT Software Studio | — | 666664 | — | Dissolved | |
| DT Streams and Collectibles | — | 746107 | — | Active | |
| DT TIRE | — | 683843 | — | Active | |
| DT Technology Corporation | — | 680363 | — | Dissolved | |
| DTA Holdings Ltd. | — | 674130 | — | Merged | |
| DTCC CANADA LTD./DTCC CANADA LTEE | — | 634838 | — | Active | |
| DTCC ITP MATCHING (CANADA) LIMITED/ SERVICES D'APPARIEMENT DTCC ITP CANADA LIMITÉE | — | 634837 | — | Active | |
| DTComposite Ltée | — | 668736 | — | Dissolved | |
| DTDLAB INC. | — | 619175 | — | Pending | |
| DTDM Construction Inc. | — | 601547 | — | Dissolved | |
| DTEC DEVELOPMENT LIMITED | — | 612357 | — | Dissolved | |
| DTGC Car Rental Limited Partnership | — | 650601 | — | Active | |
| DTHL Landscaping | — | 734461 | — | Active | |
| DTHM - DouralexThe Handyman | — | 771998 | — | Active | |
| DTHM Properties Mng Inc. | — | 771664 | — | Active | |
| DTL Holdings Inc. | — | 712022 | — | Dissolved | |
| DTM Dawn Gateway Canada Inc. | — | 643835 | — | Active | |
| DTM Holdings Inc. | — | 651762 | — | Active | |
| DTM Restoration Holdings Inc. | — | 762195 | — | Merged | |
| DTM Vector Canada II, Inc. | — | 508765 | — | Active | |
| DTM Vector Canada, Inc. | — | 507528 | — | Active | |
| DTMSI MANAGEMENT LTD. | — | 646862 | — | Active | |
| DTN Canada Inc. | — | 724906 | — | Active | |
| DTN, Inc. | — | 631249 | — | Dissolved | |
| DTN, LLC | — | 648873 | — | Active | |
| DTP Data2Product Inc. | — | 666039 | — | Dissolved | |
| DTR Holdings Inc. | — | 736793 | — | Active | |
| DTR MANAGEMENT LTD. | — | 4699 | — | Dissolved | |
| DTRB Enterprises Ltd. | — | 516193 | — | Dissolved | |
| DTREC Enterprise | — | 723622 | — | Pending | |
| DTS Handcrafted | — | 698816 | — | Dissolved | |
| DTS Home Improvement | — | 678924 | — | Dissolved | |
| DTS Maintenance and Courier | — | 735975 | — | Active | |
| DTSC Imports | — | 660713 | — | Active | |
| DTSI CONSTRUCTION & RENTALS ENTERPRISE LTD. | — | 769153 | — | Active | |
| DTSR TRANSPORT LTD. | — | 503421 | — | Dissolved | |
| DTX AI INC. | — | 773705 | — | Active | |
| DTZ Barnicke NB | — | 656149 | — | Dissolved | |
| DTZ Barnicke New Brunswick | — | 651591 | — | Dissolved | |
| DTZ Barnicke New Brunswick Limited | — | 652192 | — | Dissolved | |
| DU BEERS HAIR DESIGN | — | 319078 | — | Dissolved | |
| DU COUDE CORP | — | 8520 | — | Dissolved | |
| DU MOULIN CONSTRUCTION LTEE | — | 34143 | — | Dissolved | |
| DU MOULIN IMMOBILIER | — | 652508 | — | Active | |
| DU PONT MERCK PHARMA | — | 400302 | — | Active | |
| DU PONT MERCK PHARMA | — | 325877 | — | Dissolved | |
| DU PONT PHARMA | — | 325876 | — | Dissolved | |
| DU RÉEL AU MINIATURE (2022) INC. | — | 738877 | — | Dissolved | |
| DU-ALL PLUMBING | — | 309696 | — | Dissolved | |
| DU-BEAU CONSTRUCTION LTEE | — | 40266 | — | Dissolved | |
| DU-BO MEUBLES LTEE | — | 41454 | — | Dissolved | |
| DU-CON LUMBER LTD. | — | 54143 | — | Dissolved | |
| DU-MAC LTD. | — | 30334 | — | Dissolved | |
| DU-REP ENTERPRISES LTEE/LTD | — | 34831 | — | Active | |
| DUAL Commercial (Canada) Inc. | — | 679346 | — | Dissolved | |
| DUAL QUANT INFORMATICS | — | 649306 | — | Dissolved | |
| DUAL QUANT INFORMATICS | — | 688296 | — | Pending | |
| DUAL T Donuts Limited | — | 754331 | — | Active | |
| DUAL-LITE (CANADA) | — | 342291 | — | Dissolved | |
| DUANE HOVEY MOTORS LTD. | — | 93443 | — | Dissolved | |
| DUANE'S AUTOMOTIVE REPAIR LTD. | — | 631556 | — | Dissolved | |
| DUANE'S FURNITURE & APPLIANCES INC. | — | 611596 | — | Dissolved | |
| DUANE'S PLACE (1974) LTD. | — | 5268 | — | Dissolved | |
| DUANE'S PLACE LTD. | — | 92196 | — | Dissolved | |
| DUANE'S RESTAURANT LTD. | — | 5269 | — | Active | |
| DUANE'S UPHOLSTERY | — | 335493 | — | Dissolved | |
| DUART INVESTMENTS LTD. | — | 92197 | — | Dissolved | |
| DUB ANTENNA MUSIC | — | 681599 | — | Dissolved | |
| DUBBA PHOTO | — | 603683 | — | Dissolved | |
| DUBBA PHOTOGRAPHY | — | 326995 | — | Dissolved | |
| DUBBA STUDIO | — | 337436 | — | Dissolved | |
| DUBBA STUDIO | — | 612178 | — | Dissolved | |
| DUBE BROS. EQUIPMENT LTD. - EQUIPEMENT DUBE ET FRERES LTEE. | — | 33992 | — | Dissolved | |
| DUBE CONSTRUCTION CO. LTD.-DUBE CONSTRUCTION CIE. LTEE. | — | 5271 | — | Dissolved | |
| DUBE ENTERPRISES, LTD. | — | 5272 | — | Dissolved | |
| DUBE ET ISABELLE INC. | — | 71765 | — | Dissolved | |
| DUBE EXCAVATION INC. | — | 32184 | — | Dissolved | |
| DUBE READY-MIX LTD. | — | 92199 | — | Merged | |
| DUBE REALTY LTD. - IMMEUBLES DUBE LTEE | — | 5274 | — | Dissolved | |
| DUBE SPORT LTEE. | — | 5275 | — | Dissolved | |
| DUBE TRUCKING LTEE. | — | 20166 | — | Active | |
| DUBE'S ENTERPRISES | — | 303805 | — | Dissolved | |
| DUBE'S FURNITURE WAREHOUSE (1984) LTD. | — | 33218 | — | Dissolved | |
| DUBE'S HOLDINGS LTD. | — | 5276 | — | Dissolved | |
| DUBE, WILSON & ASSOCIATES/DUBE, WILSON & ASSOCIES | — | 303804 | — | Dissolved | |
| DUBEL PHOTO INC. | — | 515468 | — | Merged | |
| DUBER PRODUCTS INC. | — | 611789 | — | Dissolved | |
| DUBLAR MANAGEMENT LTD. | — | 5277 | — | Dissolved | |
| DUBOIS CHEMICALS CANADA INC. | — | 741519 | — | Merged | |
| DUBOIS CHEMICALS CANADA INC. | — | 752321 | — | Merged | |
| DUBOIS CHEMICALS CANADA INC. | — | 732274 | — | Merged | |
| DUBOIS CHEMICALS CANADA INC. | — | 763161 | — | Active | |
| DUBOIS CHEMICALS OF CANADA LIMITED/LES PRODUITS CHIMIQUES DUBOIS DU CANADA LIMITEE | — | 17558 | — | Dissolved | |
| DUBONALA ENR. | — | 337548 | — | Dissolved | |
| DUBYA TRANSPORT | — | 676605 | — | Active | |
| DUBÉ & FILS TRANSPORT INC. | — | 612145 | — | Dissolved | |
| DUBÉ AMEUBLEMENT & MATÉRIEL DE BUREAU | — | 350652 | — | Dissolved | |
| DUBÉ AUTO SALES LIMITED | — | 5270 | — | Dissolved | |
| DUBÉ FARMS INC. | — | 604512 | — | Active | |
| DUC NGUYEN RESTAURANT INC. | — | 746501 | — | Active | |
| DUCAL PROFESSIONAL SERVICES CORP. | — | 515171 | — | Active | |
| DUCEY CONTRACTING LTD. | — | 44928 | — | Dissolved | |
| DUCEY LUMBER LTD. | — | 5278 | — | Dissolved | |
| DUCEY'S WHARF REPAIR | — | 320658 | — | Dissolved | |
| DUCHARME, MCMILLEN & ASSOCIATES CANADA, LTD. | — | 616602 | — | Active | |
| DUCK COVE ENTERPRISES LIMITED | — | 5279 | — | Dissolved | |
| DUCK COVE REALTIES, LIMITED | — | 92200 | — | Dissolved | |
| DUCK COVE RECREATION & HERITAGE ASSOCIATION INC. | — | 23752 | — | Active | |
| DUCK COVE TENNIS CLUB | — | 774130 | — | Active | |
| DUCK HEAD HOLDINGS INC. | — | 504852 | — | Merged | |
| DUCK HEAD OUTLET | — | 335342 | — | Dissolved | |
| DUCK HEAD RETAIL | — | 335343 | — | Dissolved | |
| DUCK IMPORT | — | 322623 | — | Dissolved | |
| DUCK INVESTMENTS LIMITED | — | 39290 | — | Active | |
| DUCK OR DYE PAINTBALL GAMES | — | 336070 | — | Dissolved | |
| DUCK SHORE RESIDENTS ASSOCIATION, INC. | — | 603227 | — | Active | |
| DUCKS FOR BUCKS | — | 323611 | — | Dissolved | |
| DUCKS UNLIMITED CANADA CANARDS ILLIMITES CANADA | — | 100009 | — | Active | |
| DUCKY'S | — | 344547 | — | Dissolved | |
| DUCKY'S | — | 340189 | — | Dissolved | |
| DUCKY'S BAR | — | 321332 | — | Dissolved | |
| DUCLOS & FILS LTEE | — | 33843 | — | Active | |
| DUCLOS HOLDINGS INC. | — | 33954 | — | Dissolved | |
| DUCO FERME LTEE. | — | 5282 | — | Dissolved | |
| DUCO LTD. | — | 5281 | — | Dissolved | |
| DUCO. VENTURES LTD. | — | 59687 | — | Dissolved | |
| DUCOR INSTALLATIONS LTD. | — | 58736 | — | Dissolved | |
| DUCTAL | — | 730443 | — | Active | |
| DUDE ENTERPRISES INC. | — | 505844 | — | Dissolved | |
| DUDLEY'S ENTERPRISES INC. | — | 43572 | — | Dissolved | |
| DUDON LTD. | — | 32944 | — | Dissolved | |
| DUDS FOR SPUDS | — | 344796 | — | Dissolved | |
| DUDS FOR U INC. | — | 56988 | — | Dissolved | |
| DUE SOUTH STRATEGIES | — | 338092 | — | Dissolved | |
| DUET CAFÉ | — | 609293 | — | Dissolved | |
| DUET CAFÉ INC. | — | 614803 | — | Dissolved | |
| DUFCO INVESTMENTS LTD. | — | 2360 | — | Dissolved | |
| DUFF & PHELPS CANADA LIMITED | — | 694290 | — | Merged | |
| DUFF CONSTRUCTION | — | 345459 | — | Dissolved | |
| DUFF MOTORS LTD. | — | 509377 | — | Dissolved | |
| DUFFER ENTERPRISES LTD. | — | 500823 | — | Dissolved | |
| DUFFERIN CONSULTANTS | — | 318304 | — | Inactive | |
| DUFFERIN CUE LTD. | — | 75500 | — | Dissolved | |
| DUFFERIN DEVELOPMENTS INC. | — | 631403 | — | Active | |
| DUFFERIN ENTERPRISES LIMITED | — | 502099 | — | Active | |
| DUFFERIN ENTERPRISES LIMITED | — | 41609 | — | Merged | |
| DUFFERIN ENTERPRISES LIMITED | — | 5284 | — | Merged | |