| MAD DOG SLASHING LTD. | — | A0122964 | 2022-05-05 | Active | |
| MAD DOG VINTAGE | — | FM0867080 | 2022-01-11 | Active | |
| MAD DOG WELDING & FABRICATING LTD. | — | BC0614368 | 2000-09-19 | Inactive | |
| MAD DOG'S HOME COMPUTING SERVICES | — | FM0429007 | 2006-07-13 | Active | |
| MAD DOG'S SKI & SPORTS LTD. | — | BC1066163 | 2016-03-01 | Active | |
| MAD DOG'S SKI & SPORTS LTD. | — | BC0307545 | 1986-04-11 | Inactive | |
| MAD DOG'S SKI CHALET | — | FM0070644 | 1986-06-26 | Active | |
| MAD DOGS AND AN ENGLISHMAN DOG WALKING INC. | — | BC0911914 | 2011-06-01 | Inactive | |
| MAD DOGS CLOTHING | — | FM0271643 | 1999-12-10 | Active | |
| MAD DOGS IN HEAT BAND | — | FM0063390 | 1985-08-23 | Active | |
| MAD DOGZ FILM SERVICES INC. | — | BC0449539 | 1993-06-23 | Active | |
| MAD DONKEY DESIGN | — | FM0809280 | 2020-06-25 | Active | |
| MAD DRIFTER STUDIO | — | FM0700236 | 2016-10-07 | Inactive | |
| MAD DUCK THEATRE SOCIETY | — | S0045404 | 2002-12-05 | Inactive | |
| MAD DUTCH TRADING CORP. | — | BC0508324 | 1995-11-14 | Active | |
| MAD ELF GARDENING SERVICES | — | FM0218893 | 1997-04-25 | Active | |
| MAD ENDURANCE COACHING | — | FM0866725 | 2022-01-06 | Active | |
| MAD ESTHETICS LLP | — | LL0000521 | 2011-09-13 | Active | |
| MAD FILAMENTS | — | FM0783826 | 2019-07-30 | Inactive | |
| MAD FILAMENTS SOFTWARE INC. | — | BC1273990 | 2020-11-10 | Active | |
| MAD FILM PRODUCTIONS | — | FM0101199 | 1989-09-28 | Active | |
| MAD FISH ENTERPRISES | — | FM0344009 | 2003-04-01 | Inactive | |
| MAD FISH INVESTMENTS INC. | — | A0098517 | 2016-04-05 | Active | |
| MAD FITNESS | — | FM0553230 | 2011-03-29 | Active | |
| MAD FOG VAPORS INCORPORATED | — | BC1344973 | 2022-01-27 | Active | |
| MAD FOR JOY MUSIC | — | FM0765690 | 2019-01-15 | Active | |
| MAD FOR VAN, DESIGN CO. | — | FM1062972 | 2024-12-18 | Active | |
| MAD FOX MARKETING INC. | — | BC1346572 | 2022-02-05 | Active | |
| MAD FOX RANCH | — | FM0777242 | 2019-05-15 | Active | |
| MAD FOX VENTURES INC. | — | BC0994979 | 2014-02-26 | Active | |
| MAD FX MAKE-UP PRODUCTIONS | — | FM0605048 | 2013-04-10 | Active | |
| MAD G RANCH (1980) LTD. | — | BC0214848 | 1980-08-20 | Inactive | |
| MAD GAFFER ADVENTURES LTD. | — | BC1411503 | 2023-04-19 | Active | |
| MAD GAL HOLDINGS LTD. | — | BC1560343 | 2025-10-16 | Active | |
| MAD GENIUS SOFTWARE LTD. | — | BC0517199 | 1996-04-12 | Inactive | |
| MAD GNOME RESOURCES LTD. | — | BC0908046 | 2011-04-12 | Inactive | |
| MAD GRAPHICS LTD. | — | BC0924927 | 2011-11-10 | Inactive | |
| MAD GREEK RESTAURANT LTD. | — | BC0616137 | 2000-10-20 | Inactive | |
| MAD GREEK TRUCKING LTD. | — | BC0856847 | 2009-07-15 | Inactive | |
| MAD GRIPPER GOLD MINING COMPANY INC. | — | BC0736816 | 2005-10-04 | Active | |
| MAD GUTTERS LTD. | — | BC0716214 | 2005-02-10 | Inactive | |
| MAD GUYS LOGISTICS CORP. | — | BC1468099 | 2024-02-28 | Active | |
| MAD HACKER BUCKING | — | FM0222191 | 1997-06-20 | Active | |
| MAD HACKER COMPUTERS INC. | — | BC1440078 | 2023-09-19 | Active | |
| MAD HAMMER CONTRACTING | — | FM0631471 | 2014-04-10 | Active | |
| MAD HAMMER CONTRACTING LTD. | — | BC1431222 | 2023-08-01 | Active | |
| MAD HARRY PRODUCTIONS INC. | — | A0142201 | 2026-05-27 | Active | |
| MAD HAT CREATIVE | — | FM0543852 | 2010-11-26 | Active | |
| MAD HATHA YOGA | — | FM0569787 | 2011-11-08 | Active | |
| MAD HATTER BARTENDING SERVICES | — | FM0490824 | 2008-11-25 | Active | |
| MAD HATTER BISTRO LTD. | — | BC1413530 | 2023-04-30 | Active | |
| MAD HATTER BOOKBINDING CO. | — | FM0561064 | 2011-07-08 | Active | |
| MAD HATTER BOOKSTORE | — | FM0622493 | 2013-12-11 | Active | |
| MAD HATTER CONSTRUCTION | — | FM0725987 | 2017-08-16 | Active | |
| MAD HATTER CYCLE WORKS | — | FM0081182 | 1987-09-04 | Active | |
| MAD HATTER DESIGN STUDIO | — | FM0268326 | 1999-10-14 | Active | |
| MAD HATTER DESIGNS LTD. | — | BC0324861 | 1987-04-09 | Inactive | |
| MAD HATTER ENTERPRISE | — | FM1068227 | 2025-02-19 | Active | |
| MAD HATTER GRILL LTD. | — | BC0529941 | 1996-10-28 | Inactive | |
| MAD HATTER MECHANICAL | — | FM1024084 | 2023-08-23 | Active | |
| MAD HATTER MECHANICAL LTD. | — | BC1452475 | 2023-11-30 | Active | |
| MAD HATTER METAL FAB | — | FM0665525 | 2015-07-15 | Active | |
| MAD HATTER PRODUCTIONS | — | FM0176455 | 1995-03-17 | Active | |
| MAD HATTER PRODUCTIONS | — | FM0323285 | 2002-05-16 | Active | |
| MAD HATTER SPORTSWEAR LTD. | — | BC0370218 | 1989-07-31 | Inactive | |
| MAD HATTER TEA PARTY ACCESSORIES | — | FM0117466 | 1991-04-09 | Active | |
| MAD HATTER'S TEA PARTY STUDIO | — | FM0346276 | 2003-04-29 | Active | |
| MAD HATTERHORN CLIMBING | — | FM0807016 | 2020-05-26 | Active | |
| MAD HATTERS HATS | — | FM0153371 | 1993-12-08 | Active | |
| MAD HATTERZ PRODUCTS | — | FM0492895 | 2009-01-05 | Active | |
| MAD HATTERZ TEA HOUSE | — | FM0643040 | 2014-09-19 | Active | |
| MAD HATTERZ TEA HOUSE LTD. | — | BC1018108 | 2014-11-04 | Inactive | |
| MAD HAUS GROUP DESIGN | — | FM0749969 | 2018-06-21 | Active | |
| MAD HIGH IV PRODUCTIONS INC. | — | BC0522715 | 1996-06-27 | Inactive | |
| MAD HIGH PRODUCTIONS INC. | — | BC0442405 | 1993-03-05 | Inactive | |
| MAD HIGH V PRODUCTIONS INC. | — | BC0537860 | 1997-03-04 | Inactive | |
| MAD HOLDINGS LTD. | — | BC0477311 | 1994-07-22 | Inactive | |
| MAD HOUSE OF KNITTING | — | FM0738726 | 2018-01-29 | Active | |
| MAD IMPORT & EXPORT CO., LTD. | — | BC1018474 | 2014-11-07 | Inactive | |
| MAD IN CRAFT! | — | FM0250481 | 1998-12-03 | Active | |
| MAD INDUSTRIES LTD. | — | BC0937108 | 2012-04-03 | Inactive | |
| MAD INK CUSTOM DESIGN | — | FM0625037 | 2014-01-22 | Active | |
| MAD INNOVATIONS | — | FM0650262 | 2015-01-10 | Active | |
| MAD INNOVATIONS CONSULTING | — | FM0488459 | 2008-10-19 | Active | |
| MAD INNOVATIONS EVENT MANAGEMENT | — | FM0437523 | 2006-11-09 | Active | |
| MAD IQ SOLUTIONS INC. | — | BC1577175 | 2026-02-11 | Active | |
| MAD ITALIAN PIZZA COMPANY | — | FM1005852 | 2022-12-12 | Active | |
| MAD JAB'S CUSTOM AIRBRUSHING | — | FM0481008 | 2008-06-26 | Active | |
| MAD JACK FILMS | — | FM0775127 | 2019-04-25 | Active | |
| MAD JACK MCMAD PRODUCTIONS LTD. | — | BC0928792 | 2011-12-28 | Active | |
| MAD JACK PICTURES | — | FM0776016 | 2019-05-03 | Active | |
| MAD JAZZ LIVE STUDIOS | — | FM0848133 | 2021-06-07 | Active | |
| MAD KAT BREAD INC. | — | BC0675179 | 2003-08-13 | Inactive | |
| MAD KAT CLOTHING INC. | — | BC0625556 | 2001-04-04 | Inactive | |
| MAD KATZ CLOTHING CO. | — | FM0110842 | 1990-08-23 | Inactive | |
| MAD KATZ CLOTHING CO. | — | FM0276930 | 2000-03-17 | Active | |
| MAD KO-BRA CONTRACTING LTD. | — | BC0780354 | 2007-01-19 | Active | |
| MAD LABORATORY DISTILLING LTD. | — | BC0974785 | 2013-07-08 | Active | |
| MAD LABS MARKETING | — | FM0772186 | 2019-03-27 | Active | |
| MAD LADS BEARD COMPANY | — | FM0771236 | 2019-03-19 | Active | |
| MAD LASH AESTHETICS | — | FM1067804 | 2025-02-13 | Active | |
| MAD LASHES | — | FM1060029 | 2024-11-09 | Active | |
| MAD LIGHTING DESIGN INC. | — | BC0546184 | 1997-07-07 | Inactive | |
| MAD LILLIES HAIR & CO | — | FM0693305 | 2016-07-08 | Active | |
| MAD LION CONSULTING INC. | — | BC1394235 | 2023-01-01 | Active | |
| MAD LLAMA STUDIO LTD. | — | BC1313893 | 2021-07-05 | Active | |
| MAD LOON ENTERTAINMENT | — | FM0680110 | 2016-02-02 | Active | |
| MAD LOVE MUSIC | — | FM0334502 | 2002-11-13 | Active | |
| MAD LOVE STUDIO | — | FM0495420 | 2009-02-10 | Active | |
| MAD MAC ADVENTURE TOURS LTD. | — | BC0404792 | 1991-04-23 | Inactive | |
| MAD MAC'S CUSTOM MACHINES | — | FM0853030 | 2021-07-15 | Active | |
| MAD MAC'S ENTERPRISES | — | FM0203381 | 1996-07-23 | Active | |
| MAD MAIDS | — | FM0532062 | 2010-06-18 | Active | |
| MAD MAINTENANCE LIMITED | — | BC0089431 | — | Inactive | |
| MAD MAKERS DESIGN CO. | — | FM0698835 | 2016-09-22 | Active | |
| MAD MALKA'S PET PRODUCTS INC. | — | BC1002173 | 2014-05-13 | Inactive | |
| MAD MAMA MEDIA | — | FM0302228 | 2001-05-23 | Active | |
| MAD MAN ISLAND BEAUTIE'S ESCORTS | — | FM0374591 | 2004-06-15 | Active | |
| MAD MAN MCKAY | — | FM0364145 | 2004-01-28 | Inactive | |
| MAD MAN MIKE MESSENGER | — | FM0091219 | 1988-10-07 | Active | |
| MAD MANAGEMENT SERVICES | — | FM0675433 | 2015-11-26 | Active | |
| MAD MANGO CAFE LTD. | — | BC0626361 | 2001-04-20 | Inactive | |
| MAD MANGO CAFE LTD. | — | BC1336067 | 2021-12-02 | Active | |
| MAD MANGO'S CUSTOM PAINT AND BODY | — | FM0423153 | 2006-04-28 | Active | |
| MAD MANUFACTURING | — | FM0344967 | 2003-04-11 | Active | |
| MAD MARCH RACING INC. | — | BC0761478 | 2006-06-22 | Inactive | |
| MAD MARDIGANS RESTAURANT TAKE OUT LTD. | — | BC0748318 | 2006-02-09 | Inactive | |
| MAD MARKETING AND DEVELOPMENT LTD. | — | BC0903657 | 2011-02-22 | Inactive | |
| MAD MASKS | — | FM0802998 | 2020-04-06 | Active | |
| MAD MAX CONTRACTING | — | FM0851878 | 2021-07-02 | Active | |
| MAD MAX DEMOLITION | — | FM1042899 | 2024-04-06 | Active | |
| MAD MAX MOTORS | — | FM0608157 | 2013-05-22 | Active | |
| MAD MAX WELDING LTD. | — | BC0997481 | 2014-03-25 | Active | |
| MAD MAX'S | — | FM0098865 | 1989-07-04 | Active | |
| MAD MAZ PAINTING | — | FM0885949 | 2022-07-14 | Active | |
| MAD MCK'S | — | FM0809109 | 2020-06-23 | Active | |
| MAD MCKOO'S VISUAL PROMOTION INC. | — | BC0409491 | 1991-07-17 | Inactive | |
| MAD MECHANICAL HOLDINGS LTD. | — | BC1582358 | 2026-03-17 | Active | |
| MAD MECHANICAL SERVICES LTD. | — | BC1379404 | 2022-09-20 | Active | |
| MAD MEDIA | — | FM0641500 | 2014-08-28 | Active | |
| MAD MELAN BLOCKING | — | FM0397549 | 2005-05-12 | Active | |
| MAD MELVIN'S GARDEN CENTER (2005) LTD. | — | BC0726072 | 2005-06-01 | Inactive | |
| MAD MELVIN'S GARDEN SUPPLIES LTD. | — | BC0624766 | 2001-03-22 | Inactive | |
| MAD MERCH CANADIAN DISTRIBUTION | — | FM0623632 | 2014-01-03 | Active | |
| MAD METALS INC. | — | BC0754080 | 2006-04-05 | Active | |
| MAD MEX EXPRESS LTD. | — | BC1396060 | 2023-01-13 | Active | |
| MAD MIKE SERVICES | — | FM1049256 | 2024-06-20 | Active | |
| MAD MIKE'S MECHANICAL | — | FM0589894 | 2012-08-20 | Active | |
| MAD MIKES METAL FAB | — | FM0589009 | 2012-08-03 | Active | |
| MAD MIKES PILOT SERVICES | — | FM0876105 | 2022-03-31 | Active | |
| MAD MIKES POUTINERIE INC. | — | BC1260267 | 2020-08-06 | Inactive | |
| MAD MILLING CONTRACTING | — | FM0655450 | 2015-03-13 | Active | |
| MAD MINERALS INC | — | A0113512 | 2020-06-03 | Active | |
| MAD MIX MUSIC LTD. | — | BC1277333 | 2020-12-01 | Inactive | |
| MAD MOCHI APPAREL | — | FM0844787 | 2021-05-08 | Active | |
| MAD MOLES COMMUNICATIONS | — | FM0236725 | 1998-04-01 | Active | |
| MAD MONDAY STUDIO (MM.) INC. | — | BC1559340 | 2025-10-03 | Active | |
| MAD MONEY CUSTOMS LTD. | — | BC1579312 | 2026-02-25 | Active | |
| MAD MONEY INVESTMENTS LTD. | — | BC0941626 | 2012-05-28 | Active | |
| MAD MONKEY METAL WERX | — | FM0592559 | 2012-09-28 | Active | |
| MAD MONKEY PLUMBING | — | FM0654572 | 2015-03-03 | Active | |
| MAD MONKEY PRODUCTIONS | — | FM0684847 | 2016-03-29 | Active | |
| MAD MONKEYS TECHNOLOGY & DESIGN INC. | — | BC1142968 | 2017-11-29 | Active | |
| MAD MONTY'S SWAP SHOP INC. | — | BC0395691 | 1990-10-30 | Inactive | |
| MAD MOOSE MARIJUANA FARM | — | FM0869077 | 2022-01-31 | Active | |
| MAD MOOSE PRODUCTIONS INC. | — | BC1056675 | 2015-11-27 | Active | |
| MAD MOOSE SERVICES | — | FM0398845 | 2005-05-30 | Active | |
| MAD MOOSE ULTRA-MARATHON, MARATHON AND HALF MARATHON SOCIETY | — | S0061458 | 2013-07-03 | Inactive | |
| MAD MOP CLEANING | — | FM0713808 | 2017-03-23 | Inactive | |
| MAD MOP CLEANING | — | FM0688224 | 2016-05-04 | Active | |
| MAD MORTY INDUSTRIES LTD. | — | BC0946958 | 2012-08-01 | Active | |
| MAD MOTORS | — | FM0266506 | 1999-09-21 | Active | |
| MAD MOTORWORKS | — | FM0830457 | 2021-01-23 | Inactive | |
| MAD MOTOS | — | FM0056523 | 1984-10-01 | Active | |
| MAD MOUNTAIN LLC | — | LLC0000246 | 2007-06-19 | Inactive | |
| MAD MOUNTAIN SHOW COMPANY LTD. | — | BC0150868 | 1976-07-14 | Inactive | |
| MAD MTN BIKES | — | FM0825915 | 2020-12-02 | Active | |
| MAD MUDDERS DRYWALL LTD. | — | BC0999348 | 2014-04-11 | Inactive | |
| MAD MURPHY MEDIA | — | FM0452266 | 2007-06-01 | Inactive | |
| MAD NIGHT PRODUCTIONS | — | FM0466959 | 2007-12-28 | Active | |
| MAD OAK CONTRACTING INC. | — | BC1368343 | 2022-06-20 | Active | |
| MAD OBSESSION METALWORKS LTD. | — | BC1412640 | 2023-04-25 | Active | |
| MAD ON CARDS AND COLLECTIBLES | — | FM0196959 | 1996-04-09 | Active | |
| MAD OTTER ENTERPRISES | — | FM0052702 | 1984-03-13 | Active | |
| MAD OVER CUPS | — | FM1042649 | 2024-04-04 | Active | |
| MAD OWL ENTERPRISES | — | FM0258437 | 1999-04-30 | Active | |
| MAD PANIC CLEANING SERVICES | — | FM0192460 | 1996-01-18 | Active | |
| MAD PANTER JEANS | — | FM0024749 | 1977-11-10 | Active | |
| MAD PARK BISTRO | — | FM0697601 | 2016-09-05 | Active | |
| MAD PERFORMANCE | — | FM0159478 | 1994-05-02 | Active | |
| MAD PHOTOGRAPHY | — | FM0587753 | 2012-07-15 | Active | |
| MAD PHOTOGRAPHY AND DESIGN | — | FM0435792 | 2006-10-18 | Active | |
| MAD PIG GRAPHICS | — | FM0154781 | 1994-01-17 | Active | |
| MAD PIXEL ENTERTAINMENT | — | FM0267471 | 1999-10-05 | Active | |
| MAD PIZZA COMPANY INC. | — | BC0542452 | 1997-05-07 | Active | |
| MAD POTTER | — | FM0480850 | 2008-06-24 | Active | |
| MAD POTTER CONCEPTS LTD. | — | BC0969878 | 2013-05-13 | Inactive | |
| MAD POWDER GUIDING AND CONSULTING | — | FM0337761 | 2003-01-08 | Active | |
| MAD PRO CONTRACTING LTD. | — | BC1348231 | 2022-02-15 | Inactive | |
| MAD PROPERTY GROUP LTD. | — | BC1560249 | 2025-10-15 | Active | |