| MAPLE LODGE (NEW BRUNSWICK) LIMITED | — | 46010 | — | Withdrawn | |
| MAPLE LODGE FARMS LTD. | — | 752079 | — | Active | |
| MAPLE MEADOW FARM INC. | — | 601381 | — | Withdrawn | |
| MAPLE MEADOW POULTRY LTD. | — | 513193 | — | Withdrawn | |
| MAPLE METALS TECHNOLOGY STOCKING AND PROCESSING LTD. | — | 778905 | — | Active | |
| MAPLE MINIATURES | — | 330649 | — | Dissolved | |
| MAPLE MOTORS, LIMITED | — | 94256 | — | Dissolved | |
| MAPLE NOVA MART INC. | — | 753397 | — | Pending | |
| MAPLE OAKS CAMPING & RECREATION LTD. | — | 617769 | — | Dissolved | |
| MAPLE OF ORIENT B & B LTD. | — | 682663 | — | Dissolved | |
| MAPLE ONE RAIL CORP. | — | 691800 | — | Dissolved | |
| MAPLE PLACE HOLDINGS LTD. | — | 54849 | — | Merged | |
| MAPLE PROPERTIES LTD. | — | 10420 | — | Dissolved | |
| MAPLE RIDGE DIVING | — | 605981 | — | Dissolved | |
| MAPLE RIDGE FARMS (1995) LTD. | — | 648352 | — | Merged | |
| MAPLE RIDGE FARMS (1995) LTD. | — | 55976 | — | Merged | |
| MAPLE RIDGE HOUSING LTD. | — | 39783 | — | Merged | |
| MAPLE RIDGE HOUSING LTD. | — | 608331 | — | Active | |
| MAPLE RIDGE LUMBER | — | 342162 | — | Dissolved | |
| MAPLE RIDGE TRAILS INC. | — | 507423 | — | Dissolved | |
| MAPLE RIDGE TRUCKING INC. | — | 612318 | — | Dissolved | |
| MAPLE STONE LP | — | 753238 | — | Active | |
| MAPLE SUGAR BOUTIN INC. | — | 614996 | — | Dissolved | |
| MAPLE TEA COMPANY | — | 682611 | — | Dissolved | |
| MAPLE TRAIL INN & APARTMENTS | — | 313240 | — | Dissolved | |
| MAPLE VALLEY | — | 305466 | — | Dissolved | |
| MAPLE VALLEY CONSTRUCTION | — | 631395 | — | Active | |
| MAPLE VIEW ENTERPRISES | — | 342666 | — | Dissolved | |
| MAPLECREST BUSINESS SOLUTIONS INC. | — | 611989 | — | Dissolved | |
| MAPLECREST HOLDINGS LTD. | — | 20808 | — | Dissolved | |
| MAPLECREST MANAGEMENT LIMITED | — | 10422 | — | Dissolved | |
| MAPLECROFT PRODUCTS | — | 343593 | — | Dissolved | |
| MAPLEDALE SALES LTD. | — | 39917 | — | Dissolved | |
| MAPLEGOLD RESOURCES LTD. | — | 58326 | — | Dissolved | |
| MAPLEGROVE ESTATES LIMITED | — | 10423 | — | Dissolved | |
| MAPLEHUB INTERNATIONAL BUSINESS LTD. | — | 695298 | — | Dissolved | |
| MAPLEHURST BAKERIES INC. | — | 650851 | — | Merged | |
| MAPLEHURST ENTERPRISES LTD. | — | 367 | — | Dissolved | |
| MAPLELEAF FRANCHISE CONCEPTS, INC. | — | 76219 | — | Dissolved | |
| MAPLERIDGE INSURANCE AGENCY LTD. | — | 71922 | — | Dissolved | |
| MAPLES CANTEEN (1976) LTD. | — | 10424 | — | Dissolved | |
| MAPLES MOTEL AND BUNGALOW COURT | — | 305467 | — | Dissolved | |
| MAPLES MOTEL LTD. | — | 10425 | — | Dissolved | |
| MAPLESOFT, INC. | — | 31613 | — | Dissolved | |
| MAPLESPHERE GLAMPING Ltd. | — | 764252 | — | Active | |
| MAPLETON DEVELOPERS LIMITED | — | 10426 | — | Dissolved | |
| MAPLETON FOOD BANK TEACHING KITCHEN | — | 339112 | — | Dissolved | |
| MAPLETON FOX AND FUR COMPANY,LIMITED | — | 94257 | — | Dissolved | |
| MAPLETON HEIGHTS SUBDIVISION | — | 620749 | — | Dissolved | |
| MAPLETON MART | — | 312485 | — | Dissolved | |
| MAPLETON PHARMACY LIMITED | — | 778999 | — | Active | |
| MAPLETON PLACE | — | 350723 | — | Dissolved | |
| MAPLETON PLACE DEVELOPMENTS LTD. | — | 513065 | — | Active | |
| MAPLETON PLAZA | — | 672681 | — | Dissolved | |
| MAPLETON PLAZA MONCTON FITNESS GP INC. | — | 713535 | — | Active | |
| MAPLETON PLAZA MONCTON FITNESS LP | — | 713537 | — | Active | |
| MAPLETON SUITES INC. | — | 608971 | — | Active | |
| MAPLETON TEACHING KITCHEN INC./LA CUISINE EDUCATIVE MAPLETON INC. | — | 25084 | — | Dissolved | |
| MAPLEVALE SCHOOLS INC. | — | 54471 | — | Dissolved | |
| MAPLEVIEW GARDENS INC. | — | 505518 | — | Dissolved | |
| MAPLEWOOD A & M | — | 333912 | — | Dissolved | |
| MAPLEWOOD ACRES LTD. | — | 10427 | — | Dissolved | |
| MAPLEWOOD CEMETERY COMPANY, LIMITED | — | 94258 | — | Dissolved | |
| MAPLEWOOD CONSTRUCTION | — | 330443 | — | Dissolved | |
| MAPLEWOOD CONTRACTING LTD. | — | 94259 | — | Dissolved | |
| MAPLEWOOD CUSTOM MILLWORK INC. | — | 644224 | — | Dissolved | |
| MAPLEWOOD FUEL CO. LTD. | — | 10428 | — | Dissolved | |
| MAPLEWOOD GOLF AND COUNTRY CLUB LTD. | — | 37341 | — | Active | |
| MAPOL Investments, LP | — | 699883 | — | Active | |
| MAPPINS | — | 332232 | — | Dissolved | |
| MAPPINS | — | 347096 | — | Dissolved | |
| MAPPINS | — | 325826 | — | Dissolved | |
| MAPPINS INC. | — | 18027 | — | Dissolved | |
| MAPPINS JEWELLERS | — | 648275 | — | Dissolved | |
| MAPPLE FARM | — | 317669 | — | Dissolved | |
| MAPTECH GRAPHIC SERVICES INC | — | 602140 | — | Dissolved | |
| MAPVISION | — | 334943 | — | Dissolved | |
| MAQUAPIT ASSOCIATES LTD. | — | 509614 | — | Dissolved | |
| MAQUAPIT FORGE | — | 305468 | — | Dissolved | |
| MAQUAPIT HOLDINGS LTD. | — | 10429 | — | Dissolved | |
| MAQUAPIT INVESTMENTS LTD. | — | 10430 | — | Active | |
| MAQUAPIT LAKE LOGGING LTD. | — | 508624 | — | Dissolved | |
| MAQUAPIT LAKE TRUCK & EQUIPMENT SALES INC. | — | 690133 | — | Dissolved | |
| MAQUAPIT TRUCKING LTD. | — | 506350 | — | Dissolved | |
| MAQUET-DYNAMED INC. | — | 616450 | — | Merged | |
| MAQUIS ALLIANCE CULTURELLE INC. | — | 672390 | — | Dissolved | |
| MAR & CAL ENTERPRISES | — | 332243 | — | Dissolved | |
| MAR MOR ENTERPRISES INC. | — | 35633 | — | Dissolved | |
| MAR Quispamsis Holdings Inc. | — | 611207 | — | Dissolved | |
| MAR SERVICES INC. | — | 692556 | — | Active | |
| MAR-BEC HOLDINGS LTD. | — | 10438 | — | Dissolved | |
| MAR-CAN MARKETING LTD. | — | 10440 | — | Dissolved | |
| MAR-CAR HOLDINGS LTD. | — | 10441 | — | Dissolved | |
| MAR-CHUCK DEVELOPMENTS LIMITED | — | 94269 | — | Dissolved | |
| MAR-COMM COMMUNICATION LTD. | — | 10456 | — | Dissolved | |
| MAR-FIBRE LTEE/LTD. | — | 35160 | — | Merged | |
| MAR-FIVE HOLDINGS | — | 318907 | — | Dissolved | |
| MAR-J ELECTRIC LTD. | — | 10641 | — | Dissolved | |
| MAR-JACK HOLDINGS INC. | — | 600866 | — | Active | |
| MAR-JO LIMITED | — | 35994 | — | Withdrawn | |
| MAR-JO LIMITED | — | 10643 | — | Merged | |
| MAR-KEM INDUSTRIES | — | 312821 | — | Dissolved | |
| MAR-LIN FISHING SUPPLIES | — | 335461 | — | Dissolved | |
| MAR-O-MAR FARMS LIMITED | — | 94458 | — | Dissolved | |
| MAR-PEL HOLDINGS LTD. | — | 10660 | — | Dissolved | |
| MAR-PETE COMPANY LTD. | — | 10661 | — | Dissolved | |
| MAR-PHI LTD | — | 39929 | — | Dissolved | |
| MAR-PHI REALTY | — | 317553 | — | Dissolved | |
| MAR-PHI SELECT HOMES INC. | — | 501979 | — | Merged | |
| MAR-RON HOLDINGS LTD. | — | 644430 | — | Active | |
| MAR-RON HOLDINGS LTD. | — | 31868 | — | Merged | |
| MAR-SCO HOLDINGS LTD. | — | 10665 | — | Dissolved | |
| MAR-SUG CONSULTING | — | 344957 | — | Dissolved | |
| MARA Maritime Association of Registered Acupuncturists New Brunswick Chapter Inc. | — | 650002 | — | Dissolved | |
| MARAC CONSULTING LTD. | — | 35831 | — | Dissolved | |
| MARAICHERS KENT GARDENERS LTEE LTD. | — | 50736 | — | Dissolved | |
| MARAL ENTERPRISE | — | 338030 | — | Dissolved | |
| MARALITE CONSTRUCTION CO. | — | 305469 | — | Dissolved | |
| MARANATHA BAPTIST CHURCH INC. | — | 10432 | — | Dissolved | |
| MARANATHA CHRISTIAN ASSEMBLY INC. | — | 24238 | — | Active | |
| MARANATHA CHRISTIAN BOOK SERVICE COMPANY | — | 305470 | — | Dissolved | |
| MARANATHA ENTERPRISES | — | 318927 | — | Dissolved | |
| MARANATHA REALTY LTD | — | 10433 | — | Dissolved | |
| MARANATHA REVIVALS INC. | — | 10434 | — | Active | |
| MARANDA HOLDINGS LTD. | — | 51888 | — | Dissolved | |
| MARAPOL LTEE | — | 37893 | — | Dissolved | |
| MARATHON BROKERAGE DISCOUNT INVESTMENT SERVICES/PLACEMENT MARATHON SERVICE DE COURTIERE EXECUTANT | — | 318943 | — | Dissolved | |
| MARATHON CANADA LIMITED | — | 77668 | — | Dissolved | |
| MARATHON CLEANING SYSTEMS (1988) LTD. | — | 41259 | — | Dissolved | |
| MARATHON CLEANING SYSTEMS LTD. | — | 32894 | — | Dissolved | |
| MARATHON CONSTRUCTION LTD. | — | 10435 | — | Dissolved | |
| MARATHON ENTERPRISES INC. | — | 615961 | — | Dissolved | |
| MARATHON FOREST PRODUCTS LIMITED | — | 70241 | — | Merged | |
| MARATHON HOTEL LTD. | — | 10436 | — | Merged | |
| MARATHON HOTEL LTD. | — | 696189 | — | Active | |
| MARATHON INVESTMENT GROUP LTD. | — | 35933 | — | Dissolved | |
| MARATHON REALTY COMPANY LIMITED-LA SOCIETE IMMOBILIERE MARATHON, LIMITEE | — | 18029 | — | Dissolved | |
| MARATRANS INC. | — | 45681 | — | Dissolved | |
| MARAUST ENTERPRISES LTD. | — | 10437 | — | Dissolved | |
| MARBA HOLDINGS | — | 329881 | — | Dissolved | |
| MARBA IMPORTS | — | 608335 | — | Dissolved | |
| MARBEA HOLDINGS LTD. | — | 42746 | — | Dissolved | |
| MARBEL MANAGEMENT LTD. | — | 692171 | — | Dissolved | |
| MARBEV ENTERPRISES | — | 332299 | — | Dissolved | |
| MARBLE ELEGANCE | — | 338688 | — | Dissolved | |
| MARBLE ENTERPRISES LTD. | — | 52527 | — | Dissolved | |
| MARBLE EYES | — | 326822 | — | Dissolved | |
| MARBLL Consulting Inc. | — | 636691 | — | Dissolved | |
| MARBRICK HOLDINGS LTD. | — | 35525 | — | Dissolved | |
| MARBRO RESTAURANT | — | 328966 | — | Dissolved | |
| MARBRO TRUCKLINE INC. | — | 699802 | — | Active | |
| MARBROOK LIMITED | — | 509798 | — | Dissolved | |
| MARBUR GROUP LIMITED | — | 654211 | — | Active | |
| MARBURN INTERNATIONAL MINING CO. LTD. | — | 94260 | — | Dissolved | |
| MARC A. BOSSE PROFESSIONAL CORPORATION | — | 505594 | — | Active | |
| MARC ANDRÉ ROBICHAUD INVESTMENT LTD. | — | 634247 | — | Active | |
| MARC BARRIAULT FITNESS INC. | — | 606210 | — | Dissolved | |
| MARC BEAULIEU RÉPARATION INC. | — | 618372 | — | Active | |
| MARC CHAMPAGNE TECHNIQUE | — | 336338 | — | Dissolved | |
| MARC CHIASSON TRUCKING (2017) LTÉE | — | 698924 | — | Active | |
| MARC CHIASSON TRUCKING LTEE | — | 57195 | — | Merged | |
| MARC CORMIER CONTRACTING SERVICES LTD. | — | 603299 | — | Active | |
| MARC DOUCET AUTO SALES | — | 606703 | — | Dissolved | |
| MARC DOUCET PAINTING | — | 331331 | — | Dissolved | |
| MARC ENTREPRISES LTEE. | — | 10439 | — | Active | |
| MARC GALLANT CONSTRUCTION INC. | — | 694815 | — | Active | |
| MARC I. LTD - LTEE | — | 20421 | — | Dissolved | |
| MARC LEBLANC CA CORPORATION PROFESSIONNELLE LTEE | — | 53409 | — | Dissolved | |
| MARC LEGERE CONSTRUCTION INC. | — | 642515 | — | Active | |
| MARC PITRE'S CARPENTRY AND RENOVATIONS | — | 645564 | — | Dissolved | |
| MARC R. GUIGNARD CORPORATION PROFESSIONNELLE INC. | — | 513233 | — | Active | |
| MARC ROUSSELLE & FILS LTEE | — | 513047 | — | Dissolved | |
| MARC ST.-LAURENT, ARCHITECTE NAVAL LIMITEE, MARC ST.-LAURENT, NAVEL ARCHITECT LIMITED | — | 14677 | — | Dissolved | |
| MARC THERIAULT HOLDINGS LTD | — | 38816 | — | Active | |
| MARC'S AUTO SERVICE & REPAIR LTD. | — | 45391 | — | Dissolved | |
| MARC'S CONST. LTD. | — | 31577 | — | Dissolved | |
| MARC'S FUN RENTALS LTD. | — | 502643 | — | Dissolved | |
| MARC'S HAIR PORT LTD. | — | 10459 | — | Dissolved | |
| MARC'S MOWING | — | 334162 | — | Dissolved | |
| MARC'S PIZZA & SUBS | — | 327212 | — | Dissolved | |
| MARC-ANDRE RICHARD PROFESSIONAL CORPORATION | — | 629328 | — | Active | |
| MARC-HERVÉ PRO SHOP | — | 697336 | — | Active | |
| MARCAN BATHURST LTD. | — | 94261 | — | Dissolved | |
| MARCAN ENTERPRISES LTD. | — | 94263 | — | Dissolved | |
| MARCAN LTD. | — | 94264 | — | Dissolved | |
| MARCAN MONCTON LTD. | — | 94265 | — | Dissolved | |
| MARCAN SHIPPING | — | 318566 | — | Dissolved | |
| MARCAN WOODSTOCK LTD. | — | 94266 | — | Dissolved | |
| MARCAPITAL LIMITED | — | 757751 | — | Active | |
| MARCARKO LTD. - MARCARKO LTEE | — | 707819 | — | Active | |
| MARCEL BEAULIEU PUITS ARTÉSIENS LTÉE | — | 627284 | — | Dissolved | |
| MARCEL BELANGER ELECTRIC | — | 316519 | — | Dissolved | |
| MARCEL CHAMBERLAND TRANSPORT | — | 321807 | — | Dissolved | |
| MARCEL DIESEL LIMITEE | — | 10442 | — | Active | |
| MARCEL E. SAVARD INC. | — | 18350 | — | Dissolved | |
| MARCEL ENTERPRISES LTD. | — | 38163 | — | Dissolved | |
| MARCEL LA BOUTEILLE | — | 656827 | — | Dissolved | |
| MARCEL LANG SUPER MARCHE LTEE. | — | 31004 | — | Dissolved | |
| MARCEL LEBLANC CONCRETE FORMS LTD/LTEE. | — | 504855 | — | Dissolved | |
| MARCEL LEBLANC HOLDINGS LTD. | — | 38891 | — | Dissolved | |