| Black Crab Kayaks | — | 761488 | — | Active | — |
| BLACK CREEK INVESTMENT MANAGEMENT INC. | — | 693732 | — | Active | — |
| BLACK DIAMOND CHEESE | — | 328123 | — | Dissolved | — |
| BLACK DIAMOND CHEESE | — | 312063 | — | Dissolved | — |
| BLACK DIAMOND CHEESE | — | 318673 | — | Dissolved | — |
| BLACK DIAMOND CHEESE CO. | — | 329138 | — | Dissolved | — |
| BLACK DIAMOND CHEESE COMPANY | — | 329137 | — | Active | — |
| BLACK DIAMOND COAL CO. LTD. | — | 1972 | — | Dissolved | — |
| BLACK DIAMOND COAL COMPANY, LIMITED | — | 97706 | — | Dissolved | — |
| BLACK DIAMOND CUISINE | — | 727922 | — | Active | — |
| BLACK DIAMOND DRIVEWAY SEALING & PRESSURE WASHING | — | 732964 | — | Active | — |
| Black Diamond Events | — | 656176 | — | Dissolved | — |
| BLACK DIAMOND FINANCIAL CORPORATION INC. | — | 502340 | — | Active | — |
| BLACK DIAMOND GLASS | — | 341475 | — | Dissolved | — |
| BLACK DIAMOND GROUP INC. | — | 742632 | — | Dissolved | — |
| BLACK DIAMOND LIMITED PARTNERSHIP | — | 742635 | — | Active | — |
| BLACK DIAMOND LODGING INC. | — | 750208 | — | Active | — |
| BLACK DIAMOND PAVING | — | 302681 | — | Dissolved | — |
| BLACK DIAMOND SOFTWARE | — | 335971 | — | Dissolved | — |
| BLACK DIAMOND SOUND ENHANCEMENTS | — | 322789 | — | Dissolved | — |
| BLACK DIAMOND, LIMITED | — | 97705 | — | Dissolved | — |
| Black Dog Cafe and Smoke Shop Inc. | — | 682994 | — | Dissolved | — |
| Black Dog Consulting Ltd. | — | 675822 | — | Dissolved | — |
| BLACK DOG ENTERTAINMENT | — | 352473 | — | Dissolved | — |
| Black Dog Entertainment | — | 352269 | — | Dissolved | — |
| Black Dog Gardens Inc. | — | 732023 | — | Pending | — |
| Black Dog IT | — | 740125 | — | Active | — |
| BLACK DOG PRODUCTIONS | — | 616021 | — | Dissolved | — |
| Black Door Studio Salon & Spa | — | 661406 | — | Dissolved | — |
| Black Douglas Holdings Ltd. | — | 623490 | — | Merged | — |
| Black Duck Cafe | — | 676761 | — | Dissolved | — |
| BLACK DUCK HOLDINGS LTD. | — | 34799 | — | Dissolved | — |
| Black Duck Hostel | — | 666208 | — | Dissolved | — |
| BLACK DUCK REALTY | — | 312752 | — | Dissolved | — |
| Black Duck Restaurants Incorporated | — | 710137 | — | Active | — |
| BLACK EAGLE CONSTRUCTION | — | 332788 | — | Dissolved | — |
| BLACK EAGLE CONSTRUCTION | — | 338788 | — | Dissolved | — |
| BLACK EAGLE CONSTRUCTION (1999) INC. | — | 508793 | — | Active | — |
| BLACK EAGLE ENTERPRISES INC. | — | 46167 | — | Dissolved | — |
| BLACK EAGLE MANAGEMENT ENTERPRISES | — | 337827 | — | Dissolved | — |
| Black Ember Consulting | — | 736923 | — | Dissolved | — |
| Black Eyed Dog N.B. Inc. | — | 621025 | — | Dissolved | — |
| Black Face Lift | — | 346594 | — | Dissolved | — |
| Black Fern Holdings Ltd. | — | 732886 | — | Active | — |
| Black Fly Racing | — | 689905 | — | Dissolved | — |
| Black Fly Racing Inc. | — | 633783 | — | Dissolved | — |
| BLACK FOREST BAKERY | — | 319519 | — | Dissolved | — |
| Black Forest Bakery Inc. | — | 739056 | — | Active | — |
| BLACK FOREST PRODUCTS CONSULTING LTD. | — | 32745 | — | Dissolved | — |
| BLACK FOREST SHOES LTD. | — | 32430 | — | Dissolved | — |
| BLACK FOREST STOVES LTD. | — | 30059 | — | Dissolved | — |
| Black Fox Builders | — | 708565 | — | Dissolved | — |
| BLACK FRAMES | — | 302683 | — | Dissolved | — |
| Black Galley Distilling | — | 703216 | — | Dissolved | — |
| Black Galley Distilling Inc. | — | 716197 | — | Active | — |
| Black Gold Ventures | — | 763574 | — | Active | — |
| Black Hammer Driveway Solutions | — | 775777 | — | Active | — |
| Black Hat Poker Supplies | — | 650465 | — | Dissolved | — |
| BLACK HAWK CONSULTING INC. | — | 741470 | — | Active | — |
| BLACK HAWK ENTERPRISES | — | 308872 | — | Dissolved | — |
| BLACK HEART TATTOO STUDIO | — | 333068 | — | Dissolved | — |
| BLACK HOLDINGS LIMITED | — | 1973 | — | Dissolved | — |
| BLACK HOLISTIC SUNSHINE EDUCATION INC. | — | 765659 | — | Active | — |
| BLACK HORSE BAR SUPPLIES LTD. | — | 37600 | — | Dissolved | — |
| BLACK HORSE LEATHER AND SHOE REPAIR | — | 339070 | — | Dissolved | — |
| BLACK HORSE SHOE REPAIR | — | 339665 | — | Dissolved | — |
| Black Hull Holdings Ltd. | — | 746328 | — | Dissolved | — |
| Black Hull Properties Ltd. | — | 746326 | — | Dissolved | — |
| Black Ice Basic Lawn Care | — | 734337 | — | Active | — |
| Black in Maritimes Podcast | — | 719148 | — | Dissolved | — |
| Black in the Maritimes Podcast Inc. | — | 721459 | — | Dissolved | — |
| Black Jack 2007 | — | 634039 | — | Dissolved | — |
| Black Jack Country Bar 2002 | — | 602843 | — | Dissolved | — |
| BLACK JACK COUNTRY BAR 2002 LTD. | — | 612828 | — | Dissolved | — |
| Black Jack Lounge | — | 622688 | — | Dissolved | — |
| Black Jack Place Centre-Ville | — | 662631 | — | Dissolved | — |
| BLACK JOE'S GYM | — | 338379 | — | Dissolved | — |
| Black Knight Press Inc. | — | 764070 | — | Active | — |
| Black Knight Solutions Inc. | — | 753329 | — | Active | — |
| Black Knight Ventures | — | 746530 | — | Active | — |
| BLACK LAB ENTERPRISES LTD. | — | 512736 | — | Active | — |
| Black Label Construction | — | 713655 | — | Dissolved | — |
| Black Label Marketing Group Inc. | — | 737658 | — | Dissolved | — |
| BLACK LAND ENTERPRISES LTD. | — | 39049 | — | Dissolved | — |
| Black Line Design | — | 752101 | — | Active | — |
| BLACK LINE SUPPLY | — | 342996 | — | Dissolved | — |
| Black Lion Restaurant & Pub Ltd | — | 650491 | — | Dissolved | — |
| BLACK LIVES MATTER NEW BRUNSWICK INC. | — | 717265 | — | Active | — |
| Black Lotus Premium E-Liquid LTD. | — | 684775 | — | Dissolved | — |
| Black mac pressure seal | — | 701686 | — | Active | — |
| BLACK MAGIC DRIVEWAY SEALING | — | 315126 | — | Dissolved | — |
| Black Mark Inc. | — | 612134 | — | Dissolved | — |
| BLACK MARKET FINANCIAL GROUP INC. / MARCHE NOIR GROUPE FINANCIER INC. | — | 638888 | — | Dissolved | — |
| BLACK MIRROR PAVING LTD. | — | 1975 | — | Dissolved | — |
| Black Mom's NB Network Inc. | — | 759141 | — | Pending | — |
| Black Moose Investment Ltd. | — | 725898 | — | Active | — |
| Black Mountain Contracting Inc. | — | 748833 | — | Active | — |
| Black Mountain Exteriors | — | 724509 | — | Dissolved | — |
| Black Mountain Exteriors Inc. | — | 725677 | — | Withdrawn | — |
| Black Mountain Group Inc. | — | 758901 | — | Active | — |
| Black Mountain Real Estate Corporation | — | 758902 | — | Active | — |
| BLACK OAK INVESTMENTS LTD. | — | 37103 | — | Dissolved | — |
| Black ops | — | 611429 | — | Dissolved | — |
| BLACK PATH PAVING LTD. | — | 1976 | — | Dissolved | — |
| Black Pear Piercing | — | 718173 | — | Active | — |
| BLACK PEARL INVESTMENTS INC. | — | 693712 | — | Withdrawn | — |
| BLACK PEARL K-9'S | — | 328848 | — | Dissolved | — |
| BLACK PEARL K-9'S LTD. | — | 54261 | — | Dissolved | — |
| BLACK PHOTO CORPORATION | — | 70390 | — | Merged | — |
| BLACK PHOTO CORPORATION | — | 74265 | — | Merged | — |
| BLACK PHOTO CORPORATION | — | 71746 | — | Merged | — |
| BLACK PHOTO CORPORATION/CORPORATION BLACK PHOTO | — | 74474 | — | Merged | — |
| Black Pixel Marketing Inc. | — | 747003 | — | Dissolved | — |
| Black Pug Records Canada Inc. | — | 761563 | — | Active | — |
| BLACK RABBIT Creative Group INC. | — | 718203 | — | Active | — |
| Black Rabbit Processing | — | 350418 | — | Dissolved | — |
| Black Rapids Retreat | — | 742156 | — | Active | — |
| BLACK RAPIDS SALMON CLUB LTD. | — | 32315 | — | Dissolved | — |
| BLACK RAT TRUCKING | — | 350995 | — | Dissolved | — |
| Black River Castings Ltd. | — | 609768 | — | Active | — |
| Black River Designs | — | 638414 | — | Dissolved | — |
| Black River Fisheries Inc. | — | 732493 | — | Active | — |
| BLACK RIVER HOLDINGS LTD. | — | 48132 | — | Dissolved | — |
| BLACK RIVER TIMBER LTD. | — | 58068 | — | Dissolved | — |
| BLACK RIVER WELDING | — | 348302 | — | Dissolved | — |
| Black River Welding, Fabrication & Machining Inc. | — | 711960 | — | Active | — |
| Black River Woodworking | — | 777314 | — | Active | — |
| BLACK RIVER WOODWORKING ENTEPRISES | — | 315393 | — | Dissolved | — |
| BLACK ROCK SILVERS | — | 315216 | — | Dissolved | — |
| BLACK SAPOTE VENTURES LIMITED | — | 641988 | — | Dissolved | — |
| Black Sea Transportation Ltd. | — | 689018 | — | Dissolved | — |
| BLACK SEAL COMPANY LIMITED | — | 41650 | — | Dissolved | — |
| BLACK SEAL PAVING | — | 337204 | — | Dissolved | — |
| BLACK SEAL PAVING AND CHIPSEALING | — | 348342 | — | Dissolved | — |
| Black Seal Paving and Chipsealing | — | 668914 | — | Dissolved | — |
| BLACK SHADOW GUIDE SERVICES | — | 335114 | — | Dissolved | — |
| Black Sheep Brewery | — | 689662 | — | Dissolved | — |
| Black Sheep Construction Inc. | — | 768492 | — | Active | — |
| Black Sheep Fisheries Ltd. | — | 707813 | — | Active | — |
| Black Sheep Keepsakes | — | 737732 | — | Active | — |
| BLACK SHEEP SHIRTS | — | 348176 | — | Dissolved | — |
| BLACK SHEEP TAVERN | — | 309817 | — | Dissolved | — |
| Black Silver Capital Corp. | — | 767983 | — | Active | — |
| BLACK SMOKE REPAIRS | — | 682916 | — | Pending | — |
| Black Spruce Construction | — | 727290 | — | Active | — |
| Black Spruce Drafting and Design Ltd. | — | 734826 | — | Active | — |
| Black Spruce Lodge | — | 612663 | — | Dissolved | — |
| Black Spruce Lodge Ltd. | — | 620499 | — | Pending | — |
| Black Spruce Rugby Football Club Inc. | — | 507881 | — | Dissolved | — |
| BLACK SPRUCE WIND ENERGY GP INC. | — | 697402 | — | Pending | — |
| BLACK SPRUCE WIND ENERGY LP | — | 697403 | — | Active | — |
| BLACK SQUIRREL ENTERPRISES LTD. | — | 1979 | — | Dissolved | — |
| BLACK STALLION MOTORS LTD. | — | 753568 | — | Pending | — |
| BLACK STAR ENTERPRISE | — | 328822 | — | Dissolved | — |
| Black Star Publishing | — | 670031 | — | Dissolved | — |
| BLACK SUNSHINE MOTO | — | 721383 | — | Pending | — |
| BLACK SWAN DEXTERITAS INC. | — | 722759 | — | Dissolved | — |
| BLACK SWAN ENTERTAINMENT INC. | — | 512085 | — | Dissolved | — |
| BLACK SWAN PUBLISHING INC. | — | 507442 | — | Dissolved | — |
| Black Tartan Media (2024) Inc. | — | 754476 | — | Active | — |
| BLACK THUNDER EXPRESS & LEASING LTD. | — | 71597 | — | Dissolved | — |
| Black Tie Candle Company Inc. | — | 751391 | — | Active | — |
| Black Tiger 22 Inc. | — | 732121 | — | Dissolved | — |
| Black Timber Creek | — | 775098 | — | Active | — |
| BLACK TOP MUSIC | — | 624013 | — | Dissolved | — |
| Black Top Sensors | — | 720228 | — | Active | — |
| Black Tusk Holdings Ltd. | — | 686502 | — | Pending | — |
| Black Tusk Management (2006) Inc. | — | 626494 | — | Withdrawn | — |
| BLACK TUSK MANAGEMENT INC. | — | 604191 | — | Merged | — |
| Black Veil Bridal Weddings and Events | — | 701736 | — | Dissolved | — |
| Black Watch Highland Dancing Association | — | 654683 | — | Dissolved | — |
| Black Water Designs Limited | — | 618039 | — | Merged | — |
| Black Willow Salon | — | 779135 | — | Active | — |
| Black Willow Salon Inc. | — | 778868 | — | Dissolved | — |
| Black Wolf Studios | — | 743658 | — | Active | — |
| Black Wood Publishing | — | 663325 | — | Dissolved | — |
| BLACK'S AWARDS LTD. | — | 684230 | — | Pending | — |
| BLACK'S CAMERAS | — | 673653 | — | Dissolved | — |
| BLACK'S CAMERAS | — | 313412 | — | Dissolved | — |
| BLACK'S CONSTRUCTION | — | 617991 | — | Dissolved | — |
| BLACK'S CONSTRUCTION | — | 331523 | — | Dissolved | — |
| BLACK'S COUNTRY VENTURES INC. | — | 607020 | — | Dissolved | — |
| Black's Embroidered Sportswear Ltd. | — | 615663 | — | Dissolved | — |
| BLACK'S FASHIONS LTD | — | 36576 | — | Merged | — |
| BLACK'S FASHIONS LTD. | — | 1982 | — | Merged | — |
| BLACK'S HARBOUR DEVELOPMENT ASSOCIATION INC. | — | 1983 | — | Dissolved | — |
| BLACK'S HARBOUR INVESTMENTS LTD. | — | 97711 | — | Dissolved | — |
| BLACK'S HARBOUR MFG., CO., LIMITED | — | 97712 | — | Dissolved | — |
| BLACK'S HARBOUR POWER CO., LIMITED | — | 97713 | — | Dissolved | — |
| BLACK'S HARBOUR TRANSFER LTD./TRANSPORT BLACK'S HARBOUR LTEE | — | 32318 | — | Merged | — |
| Black's Harbour Transfer Ltd./Transport Black's Harbour Ltee. | — | 513589 | — | Dissolved | — |
| BLACK'S HARDWARE LTD. | — | 97710 | — | Dissolved | — |
| BLACK'S HOLDINGS LTD. | — | 1984 | — | Merged | — |
| BLACK'S HOLDINGS LTD. | — | 59065 | — | Merged | — |
| Black's Holdings Ltd. | — | 674045 | — | Active | — |
| BLACK'S HUNTING & FISHING CAMPS LTD. | — | 40920 | — | Dissolved | — |
| Black's Partnership | — | 673651 | — | Dissolved | — |
| BLACK'S PHOTO CORPORATION/CORPORATION BLACK PHOTO | — | 638366 | — | Dissolved | — |
| Black's Reload Ltd. | — | 687816 | — | Dissolved | — |
| BLACK'S RELOAD LTD. | — | 506080 | — | Merged | — |