| DONSIG ACRES | — | FM0007593 | 1971-02-26 | Active | |
| DONSKY AND DONSKY WEALTH MANAGEMENT INC. | — | A0121202 | 2022-01-07 | Inactive | |
| DONSOFT SOFTWARE CO. | — | FM0275295 | 2000-02-28 | Active | |
| DONSOFT SOFTWARE CO. | — | FM0251916 | 1999-01-14 | Inactive | |
| DONSOL ENTERPRISES LTD. | — | BC0833704 | 2008-08-28 | Inactive | |
| DONSON | — | FM1018497 | 2023-06-07 | Active | |
| DONSON HOLDINGS INC. | — | BC0134689 | 1975-02-07 | Inactive | |
| DONSON TRADING INC. | — | BC0536510 | 1997-02-12 | Inactive | |
| DONSON TRUCKING | — | FM0050796 | 1983-12-06 | Active | |
| DONSON VENTURES | — | FM0212705 | 1997-01-14 | Active | |
| DONSONREN JANITORIAL SERVICES | — | FM0445560 | 2007-03-07 | Active | |
| DONSTAR ENTERPRISES LTD. | — | BC0347610 | 1988-06-24 | Inactive | |
| DONSTEEN CATERING LTD. | — | BC0122687 | 1973-10-30 | Inactive | |
| DONT FIGHT IT FALLING | — | FM1091607 | 2025-12-12 | Active | |
| DONT STOP DELIVERY | — | FM0762391 | 2018-12-03 | Active | |
| DONT TELL ME THE SKY IS BLUE | — | FM0891207 | 2022-10-04 | Active | |
| DONT TOUCH ENTERPRISES | — | FM0322250 | 2002-04-30 | Active | |
| DONTAYS ADS | — | FM0603294 | 2013-03-14 | Active | |
| DONTBELATE TRADING | — | FM1041390 | 2024-03-16 | Active | |
| DONTCALLIT.AI TECHNOLOGIES INC. | — | BC1591505 | 2026-05-21 | Active | |
| DONTDOZE ART COLLECTIVE INC. | — | BC1098715 | 2016-12-01 | Active | |
| DONTEAL HOLDING COMPANY LTD. | — | BC0121755 | 1973-09-13 | Inactive | |
| DONTEC ENTERPRISES | — | FM0539449 | 2010-09-27 | Active | |
| DONTEX CONSTRUCTION INC. | — | BC0226992 | 1981-02-17 | Inactive | |
| DONTEX GARMENT INC. | — | BC0663959 | 2003-02-14 | Inactive | |
| DONTINA HOLDINGS | — | FM0184251 | 1995-08-01 | Active | |
| DONTOB HOLDINGS ULC | — | C1404300 | 2023-03-08 | Active | |
| DONTOM ENTERPRISES LTD. | — | BC0080455 | 1968-06-25 | Inactive | |
| DONTOS RECORDS | — | FM0422921 | 2006-04-26 | Active | |
| DONTRE RESTORATIONS INC. | — | BC0698811 | 2004-06-30 | Inactive | |
| DONTS ENTERPRISES LTD. | — | BC0346457 | 1988-06-03 | Inactive | |
| DONUKR CONSTRUCTION | — | FM0872233 | 2022-02-28 | Active | |
| DONUKR CONSTRUCTION INC. | — | BC1373796 | 2022-08-03 | Active | |
| DONUM ASSOCIATES BUSINESS FINANCING | — | FM0442995 | 2007-02-05 | Active | |
| DONUM COMPUTER SOLUTIONS | — | FM0226028 | 1997-09-03 | Active | |
| DONUT ADDICTION | — | FM0823513 | 2020-11-12 | Active | |
| DONUT DAZE | — | FM0692564 | 2016-06-28 | Active | |
| DONUT DELIGHT LIMITED | — | A0028290 | 1988-09-27 | Inactive | |
| DONUT DRINK&DRIVE.COM | — | FM0379492 | 2004-08-31 | Active | |
| DONUT FORGET ME | — | FM1033484 | 2023-12-20 | Active | |
| DONUT HOUSE STUDIOS | — | FM1006880 | 2023-01-03 | Active | |
| DONUT INC. / DOUGHNUT INC. | — | A0125250 | 2022-11-09 | Inactive | |
| DONUT KING AND COFFEE LTD. | — | BC0782941 | 2007-02-16 | Inactive | |
| DONUT KING AND COFFEE LTD. | — | BC0939069 | 2012-05-01 | Active | |
| DONUT KING PRODUCTS LTD. | — | BC0048438 | — | Inactive | |
| DONUT LIGHTING INC. | — | BC1397819 | 2023-01-25 | Active | |
| DONUT MAKE YOU FEEL GOOD | — | FM0691602 | 2016-06-16 | Inactive | |
| DONUT MAKE YOU FEEL GOOD | — | FM0705819 | 2016-12-23 | Inactive | |
| DONUT PANTRY RESTAURANT | — | FM0192211 | 1996-01-16 | Active | |
| DONUT-KING FRANCHISE SERVICES LTD. | — | BC0168661 | 1977-12-02 | Inactive | |
| DONUT-KING RESTAURANTS LTD. | — | BC0168660 | 1977-12-02 | Inactive | |
| DONUTS BAY WELLNESS INC. | — | BC1601640 | 2026-07-28 | Active | |
| DONUTS DISTRIBUTION | — | FM0639074 | 2014-07-20 | Active | |
| DONUTS'R'US ENTERPRISES | — | FM0162006 | 1994-06-10 | Active | |
| DONUTZ MUSIC LICENSING | — | FM0850345 | 2021-06-23 | Active | |
| DONVALE HOLDINGS LTD. | — | BC1444488 | 2023-10-14 | Active | |
| DONVER ENTERPRISES INC. | — | BC1244191 | 2020-03-12 | Inactive | |
| DONVER MANAGEMENT INC. | — | BC0181245 | 1978-10-10 | Inactive | |
| DONVIC ENTERPRISES LTD. | — | BC0399446 | 1991-01-03 | Inactive | |
| DONVIL "HOLDINGS" | — | FM0052170 | 1984-02-16 | Active | |
| DONVILLE KENT ASSET MANAGEMENT INC. | — | A0085102 | 2012-01-13 | Active | |
| DONVILLE PROPERTY MANAGEMENT LTD. | — | BC0589901 | 1999-07-29 | Inactive | |
| DONWAY ENTERPRISES LTD. | — | BC0225153 | 1981-01-23 | Inactive | |
| DONWAY FORD SALES LIMITED | — | A0031460 | 1990-05-22 | Inactive | |
| DONWAY HOLDINGS LTD. | — | BC0174145 | 1978-04-21 | Inactive | |
| DONWAY INTERNATIONAL TRADING COMPANY LTD. | — | BC0624117 | 2001-03-15 | Inactive | |
| DONWAY INVESTMENTS LTD. | — | BC0167398 | 1977-10-27 | Inactive | |
| DONWAY PACKAGING D.M. | — | FM0106002 | 1990-03-23 | Active | |
| DONWEL INVESTMENTS COMPANY | — | FM0158733 | 1994-04-14 | Active | |
| DONWELL INTERIOR DESIGN & BUILD INC. | — | BC1587759 | 2026-04-24 | Active | |
| DONWEN HOLDINGS LTD. | — | A0031597 | 1990-06-08 | Inactive | |
| DONWILL COY | — | A0003355 | — | Inactive | |
| DONWILL HOLDINGS LTD. | — | BC0085000 | — | Inactive | |
| DONWIN ENTERPRISES | — | FM0114559 | 1991-01-04 | Active | |
| DONWIN MANAGEMENT LTD. | — | BC0263102 | 1983-04-22 | Inactive | |
| DONWOOD CONTRACTING LTD. | — | BC0548023 | 1997-08-05 | Inactive | |
| DONWOOD HOMES LTD. | — | BC0231202 | 1981-04-02 | Inactive | |
| DONWOOD KITCHEN NU CABINETS LTD. | — | BC0171629 | 1978-02-23 | Inactive | |
| DONWOOD PROJECTS | — | FM0787343 | 2019-09-12 | Active | |
| DONWOODS FINANCIAL CORPORATION | — | A0048040 | 1998-09-17 | Inactive | |
| DONYA BUBBLE HOMES LTD. | — | BC1142025 | 2017-11-21 | Active | |
| DONYA CONSTRUCTION LTD. | — | BC0781651 | 2007-02-02 | Inactive | |
| DONYA CURRENCY EXCHANGE | — | FM0344139 | 2003-04-02 | Active | |
| DONYA ENTERPRISES INC. | — | BC0902961 | 2011-02-15 | Inactive | |
| DONYA KAMRANI IMMIGRATION SERVICES INC. | — | BC1432909 | 2023-08-11 | Active | |
| DONYA LIQUOR CO. | — | FM0847188 | 2021-05-29 | Active | |
| DONYA METZGER VOICEWORKS | — | FM0699538 | 2016-09-29 | Active | |
| DONYA PAINTING LTD. | — | BC1327052 | 2021-10-04 | Active | |
| DONYA TRADING INC. | — | BC0875003 | 2010-03-02 | Active | |
| DONYA VAHIDI LAW CORPORATION | — | BC1279754 | 2020-12-16 | Active | |
| DONYAS CAKES AND DESSERTS | — | FM1005625 | 2022-12-09 | Active | |
| DONYAYH ZAN ENTERPRISE | — | FM0223583 | 1997-07-15 | Active | |
| DONYUDA ENTERPRISES LTD. | — | BC0511861 | 1996-01-16 | Active | |
| DONZ HOME RENOVATIONS | — | FM0634672 | 2014-05-22 | Active | |
| DONZI HOCKEY ENTERPRISES | — | FM0132643 | 1992-07-28 | Active | |
| DONZI TRISON TRUCKING INC. | — | BC0519412 | 1996-05-07 | Inactive | |
| DOO ALL FLOORS LTD. | — | BC0487376 | 1995-01-04 | Inactive | |
| DOO CREATIVES | — | FM0844073 | 2021-05-03 | Active | |
| DOO DOO INVESTMENTS INC. | — | BC0562491 | 1998-04-03 | Active | |
| DOO DOO TRADING LTD. | — | BC0708098 | 2004-11-06 | Inactive | |
| DOO DY CALLS PET WASTE REMOVAL | — | FM0515433 | 2009-11-10 | Active | |
| DOO ENTERPRISE LTD. | — | BC0763017 | 2006-07-10 | Inactive | |
| DOO ENTERPRISES LTD. | — | BC0294176 | 1985-06-19 | Inactive | |
| DOO GAU BEE RESTAURANT | — | FM0598838 | 2013-01-14 | Active | |
| DOO LITTLE AND SEE MORE TRANSPORT CO. LTD. | — | BC0339500 | 1988-01-25 | Inactive | |
| DOO STUFF IN COTTON | — | FM0101582 | 1989-10-16 | Active | |
| DOO YOUR HAIR | — | FM0267346 | 1999-10-01 | Active | |
| DOO-B PET ENTERPRISE LTD. | — | BC0704679 | 2004-09-22 | Inactive | |
| DOO-DADS DESIGNS INC. | — | BC0568523 | 1998-07-17 | Inactive | |
| DOO-DOO CREW | — | FM0640439 | 2014-08-11 | Active | |
| DOO-LITTLE WOODWORKING PRODUCTIONS NO JOB TOO SMALL | — | FM0260773 | 1999-06-10 | Active | |
| DOOBA TECHNOLOGY SOLUTIONS INC. | — | BC0994432 | 2014-02-20 | Inactive | |
| DOOBAH MINING LTD. (N.P.L.) | — | BC0112340 | 1972-09-26 | Inactive | |
| DOOBEE'S FINE FOODS LTD. | — | BC0306827 | 1986-03-27 | Inactive | |
| DOOBIE BOI | — | FM0830507 | 2021-01-24 | Active | |
| DOOBIE CENTRAL MAIL ORDER COMPANY LTD. | — | BC0686112 | 2004-01-28 | Inactive | |
| DOOBIE DOGS | — | FM0762865 | 2018-12-07 | Active | |
| DOOBIE STEEL & INTERIORS | — | FM0050377 | 1983-11-14 | Active | |
| DOOBIE STEEL & INTERIORS LTD. | — | BC0276854 | 1984-04-12 | Inactive | |
| DOOBOB VISUAL EFFECT INC. | — | BC1381333 | 2022-10-05 | Active | |
| DOOBOO | — | FM0725512 | 2017-08-09 | Active | |
| DOOBOO VENTURES LIMITED | — | BC1497850 | 2024-08-20 | Active | |
| DOOD GROOM | — | FM1055904 | 2024-09-13 | Active | |
| DOODA | — | FM0831381 | 2021-02-01 | Active | |
| DOODA KIDZ | — | FM0419756 | 2006-03-17 | Active | |
| DOODAD PICTURES, INC. | — | BC0593108 | 1999-09-27 | Active | |
| DOODAD SALES | — | FM0806094 | 2020-05-13 | Active | |
| DOODADS INCOMPREHENSIVE | — | FM0828071 | 2020-12-26 | Active | |
| DOODADS UNLIMITED IMPORT/EXPORT | — | FM0127636 | 1992-02-27 | Inactive | |
| DOODI SOFTWARE LTD. | — | BC1133861 | 2017-09-13 | Inactive | |
| DOODIES PET GROOMING | — | FM0860300 | 2021-10-12 | Inactive | |
| DOODIES PET GROOMING | — | FM1017686 | 2023-05-29 | Active | |
| DOODLE & COLOUR ILLUSTRATION | — | FM1019024 | 2023-06-14 | Active | |
| DOODLE AND FINCH | — | FM0803090 | 2020-04-07 | Active | |
| DOODLE BREWING CO. | — | FM0701310 | 2016-10-20 | Active | |
| DOODLE BUG DAYCARE | — | FM0424984 | 2006-05-23 | Active | |
| DOODLE BUG DAYCARE LTD. | — | BC0774710 | 2006-11-16 | Inactive | |
| DOODLE BUG LEARNING CENTER | — | FM0792156 | 2019-11-14 | Active | |
| DOODLE BUG LEARNING CENTER INC. | — | BC1522164 | 2025-01-17 | Active | |
| DOODLE BUG WRITING & EDITING | — | FM0204085 | 1996-08-02 | Active | |
| DOODLE DAPPLE DAYCARE | — | FM0623875 | 2014-01-07 | Active | |
| DOODLE DEVELOPMENT LTD. | — | BC0702077 | 2004-08-17 | Active | |
| DOODLE DISPOSAL | — | FM0505694 | 2009-06-23 | Active | |
| DOODLE DOS HOUSECALL GROOMING | — | FM1013794 | 2023-04-13 | Active | |
| DOODLE ENTERPRISES | — | FM0411874 | 2005-12-01 | Active | |
| DOODLE ENTERPRISES | — | FM0175406 | 1995-02-24 | Active | |
| DOODLE LABS INC. | — | BC1600944 | 2026-07-23 | Active | |
| DOODLE MONSTERS | — | FM0643505 | 2014-09-26 | Active | |
| DOODLE NAP INC. | — | A0099762 | 2016-08-12 | Inactive | |
| DOODLE PAWS PET CARE AND SERVICES | — | FM0716072 | 2017-04-18 | Active | |
| DOODLE PRODUCTIONS INC. | — | BC0686426 | 2004-01-30 | Active | |
| DOODLE STEW STUDIO LTD. | — | BC1141116 | 2017-11-13 | Inactive | |
| DOODLE WEB INCORPORATED | — | BC1365759 | 2022-06-02 | Active | |
| DOODLE WORKS DESIGNS | — | FM0261885 | 1999-06-25 | Active | |
| DOODLE-BUG DAYCARE | — | FM0432722 | 2006-09-06 | Active | |
| DOODLEART WORLD MARKETING AND SALES INC. | — | A0082266 | 2011-01-20 | Inactive | |
| DOODLEARTCLUB INC. | — | BC1478142 | 2024-04-26 | Active | |
| DOODLEBEAR ENTERTAINMENT INC. | — | BC1461275 | 2024-01-17 | Active | |
| DOODLEBLOBZ FINE ARTS | — | FM0549429 | 2011-02-11 | Active | |
| DOODLEBUG CHOCOLATES | — | FM0513385 | 2009-10-15 | Active | |
| DOODLEBUG DAYCARE | — | FM0313986 | 2001-12-14 | Active | |
| DOODLEBUG DAYCARE | — | FM0429792 | 2006-07-25 | Active | |
| DOODLEBUG DAYCARE SUPPORT SERVICES | — | FM0346229 | 2003-04-28 | Active | |
| DOODLEBUG DESIGN | — | FM0681029 | 2016-02-15 | Active | |
| DOODLEBUG DESIGNS | — | FM0238279 | 1998-04-23 | Active | |
| DOODLEBUG GLASS | — | FM0541825 | 2010-10-29 | Active | |
| DOODLEBUG GRAPHICS | — | FM0114349 | 1990-12-31 | Active | |
| DOODLEBUG GREETINGS AND STATIONARY | — | FM0353092 | 2003-08-08 | Active | |
| DOODLEBUG MARKETING | — | FM0438045 | 2006-11-18 | Active | |
| DOODLEBUG'S DAY CARE | — | FM0350046 | 2003-06-19 | Active | |
| DOODLEBUGS CAKES N' CUPPIES | — | FM0558635 | 2011-06-04 | Active | |
| DOODLEBUGZ PRESCHOOL & ART PROGRAM | — | FM0257625 | 1999-04-22 | Active | |
| DOODLEDISH CREATIONS | — | FM0536149 | 2010-08-12 | Active | |
| DOODLES & MORE DOG GROOMING SPAW | — | FM0536412 | 2010-08-17 | Active | |
| DOODLES AND CUDDLES | — | FM0705089 | 2016-12-12 | Active | |
| DOODLES ART & ADVERTISING | — | FM0202948 | 1996-07-12 | Active | |
| DOODLES BOUTIQUE INC. | — | BC0173615 | 1978-04-10 | Inactive | |
| DOODLES BY DESIGN | — | FM0855817 | 2021-08-20 | Active | |
| DOODLES DESIGN & PRINT | — | FM0377429 | 2004-07-28 | Active | |
| DOODLES ICE CREAM PARLOUR & CHOCOLATE FACTORY LTD. | — | BC0292215 | 1985-05-08 | Inactive | |
| DOODLES KIDS WEAR | — | FM0085324 | 1988-02-22 | Active | |
| DOODLES MOTORSPORTS | — | FM0499751 | 2009-04-08 | Active | |
| DOODLES SCRAPBOOKS & STAMPS | — | FM0512024 | 2009-09-27 | Active | |
| DOODLES SCRAPBOOKS AND STAMPS | — | FM0449129 | 2007-04-23 | Inactive | |
| DOODLES SCRAPBOOKS AND STAMPS LTD. | — | BC0693383 | 2004-04-23 | Inactive | |
| DOODLES, SCRAPBOOKS AND STAMPS | — | FM0401041 | 2005-06-24 | Active | |
| DOODLESBYNAOMI STUDIOS INC. | — | BC1355706 | 2022-03-30 | Active | |
| DOODLETOWN DOG WALKS | — | FM1074740 | 2025-05-04 | Active | |
| DOODLETOWNS ENTERPRISES | — | FM0118293 | 1991-05-01 | Active | |
| DOODLINGWITHANGELC | — | FM1049319 | 2024-06-21 | Active | |
| DOODOO BEAUTY INC. | — | BC1176273 | 2018-08-16 | Inactive | |
| DOODOO DOC PET WASTE | — | FM0255161 | 1999-03-05 | Active | |
| DOODS CANADA | — | FM0793775 | 2019-12-06 | Active | |
| DOODSON FACTORY WORKS LTD. | — | BC1346679 | 2022-02-07 | Inactive | |
| DOODY CALLS | — | FM0355854 | 2003-09-22 | Active | |
| DOODY CLEAN | — | FM0553482 | 2011-03-31 | Active | |
| DOODY TIME PET SERVICES | — | FM0457439 | 2007-08-10 | Active | |
| DOODY'S BADMINTON | — | FM0192749 | 1996-01-23 | Active | |
| DOOEY'S MANUFACTURING | — | FM0077730 | 1987-04-23 | Active | |
| DOOF RECORDS & CLOTHING | — | FM0294594 | 2001-01-29 | Active | |