| DIAMOND SEA HEAD SPA AND HAIR TREATMENT INC. | — | BC1586910 | 2026-04-19 | Active | |
| DIAMOND SEA SPA AND SALON | — | FM1057737 | 2024-10-07 | Active | |
| DIAMOND SEA VENTURES LTD. | — | A0112070 | 2020-01-02 | Active | |
| DIAMOND SEAL COATINGS INC. | — | BC0622367 | 2001-02-14 | Inactive | |
| DIAMOND SEALCOATING | — | FM0688870 | 2016-05-11 | Active | |
| DIAMOND SECURITY | — | FM0658479 | 2015-04-19 | Active | |
| DIAMOND SECURITY CONSULTANTS | — | FM0017721 | 1975-03-12 | Active | |
| DIAMOND SECURITY CONSULTANTS LTD. | — | BC0140641 | 1975-08-29 | Inactive | |
| DIAMOND SELECT VENTURES LTD. | — | BC0612757 | 2000-08-18 | Active | |
| DIAMOND SERVICE LTD. | — | BC0048608 | — | Inactive | |
| DIAMOND SF ENTERPRISES INC. | — | BC1135712 | 2017-09-28 | Inactive | |
| DIAMOND SHAMROCK CANADA LTD. | — | A0013728 | — | Inactive | |
| DIAMOND SHAMROCK CHEMICALS COMPANY | — | A0008113 | — | Inactive | |
| DIAMOND SHAMROCK CORPORATION | — | A0007845 | — | Inactive | |
| DIAMOND SHARP PRODUCTIONS | — | FM0208550 | 1996-10-22 | Active | |
| DIAMOND SHARP STUDIOS | — | FM0632452 | 2014-04-24 | Active | |
| DIAMOND SHARPENING SALES & SERVICE | — | FM0521847 | 2010-02-10 | Active | |
| DIAMOND SHELTERS, BC | — | FM0393699 | 2005-03-28 | Inactive | |
| DIAMOND SHIELD SECURITY | — | FM0877779 | 2022-04-21 | Active | |
| DIAMOND SHIELD SECURITY LTD. | — | BC1369890 | 2022-06-30 | Active | |
| DIAMOND SHINE | — | FM0589267 | 2012-08-08 | Active | |
| DIAMOND SHINE | — | FM0745462 | 2018-04-23 | Active | |
| DIAMOND SHINE | — | FM0683764 | 2016-03-15 | Active | |
| DIAMOND SHINE | — | FM0660241 | 2015-05-09 | Active | |
| DIAMOND SHINE | — | FM0592504 | 2012-09-28 | Active | |
| DIAMOND SHINE AUTO DETAIL CORP. | — | BC1198040 | 2019-03-01 | Inactive | |
| DIAMOND SHINE BUILDING MAINTENANCE LIMITED | — | BC0952070 | 2012-10-04 | Inactive | |
| DIAMOND SHINE CLEANERS | — | FM0700172 | 2016-10-06 | Active | |
| DIAMOND SHINE CLEANING | — | FM0664899 | 2015-07-08 | Active | |
| DIAMOND SHINE CLEANING | — | FM0663230 | 2015-06-14 | Active | |
| DIAMOND SHINE CLEANING | — | FM0658969 | 2015-04-24 | Active | |
| DIAMOND SHINE CLEANING | — | FM0661744 | 2015-05-27 | Active | |
| DIAMOND SHINE CLEANING CO. | — | FM0675098 | 2015-11-22 | Active | |
| DIAMOND SHINE CLEANING CORPORATION | — | BC0849145 | 2009-04-03 | Inactive | |
| DIAMOND SHINE CLEANING INC. | — | BC1402729 | 2023-02-28 | Inactive | |
| DIAMOND SHINE CLEANING SERVICES | — | FM0730625 | 2017-10-12 | Active | |
| DIAMOND SHINE CLEANING SERVICES | — | FM0658694 | 2015-04-22 | Active | |
| DIAMOND SHINE DETAILING | — | FM0725176 | 2017-08-03 | Active | |
| DIAMOND SHINE DETAILING | — | FM0605314 | 2013-04-15 | Active | |
| DIAMOND SHINE ENTERPRISE | — | FM0693253 | 2016-07-08 | Active | |
| DIAMOND SHINE HOLDINGS INC. | — | BC0553239 | 1997-10-29 | Inactive | |
| DIAMOND SHINE JANITORIAL | — | FM0694844 | 2016-07-30 | Active | |
| DIAMOND SHINE JANITORIAL INC. | — | BC1171514 | 2018-07-11 | Inactive | |
| DIAMOND SHINE JANITORIAL SERVICES | — | FM0082228 | 1987-10-27 | Active | |
| DIAMOND SHINE PAINTING AND RESTORATION | — | FM0344271 | 2003-04-03 | Active | |
| DIAMOND SHINE PAINTING SERVICES | — | FM0354129 | 2003-08-26 | Active | |
| DIAMOND SHINE YACHT SERVICES | — | FM0556970 | 2011-05-12 | Active | |
| DIAMOND SHOVEL CONTRACTING | — | FM0441371 | 2007-01-13 | Active | |
| DIAMOND SHOVEL CONTRACTING LTD. | — | BC1284493 | 2021-01-18 | Active | |
| DIAMOND SHUTTLE SERVICES LTD. | — | A0119077 | 2021-07-16 | Active | |
| DIAMOND SIX RANCH | — | FM0404202 | 2005-08-10 | Active | |
| DIAMOND SKIN SPA BY EMILY | — | FM0839010 | 2021-03-27 | Active | |
| DIAMOND SKY ENTERPRISE CO. LTD. | — | BC1375523 | 2022-08-18 | Inactive | |
| DIAMOND SMOKE SHOP | — | FM0105776 | 1990-03-16 | Active | |
| DIAMOND SNOW MANAGEMENT CO. LTD. | — | BC0517247 | 1996-04-12 | Inactive | |
| DIAMOND SOCIAL CLUB & ENTERTAINMENT | — | FM0221664 | 1997-06-12 | Active | |
| DIAMOND SOFTWARE INC. | — | A0100817 | 2016-11-29 | Inactive | |
| DIAMOND SOFTWARE INC. | — | C1201960 | 2019-03-21 | Inactive | |
| DIAMOND SOLAR ENERGY | — | FM0561074 | 2011-07-08 | Active | |
| DIAMOND SOLUTIONS | — | FM0463866 | 2007-11-07 | Active | |
| DIAMOND SOLUTIONS CONSULTING | — | FM0412944 | 2005-12-16 | Active | |
| DIAMOND SOULS | — | FM0807703 | 2020-06-05 | Active | |
| DIAMOND SOUND | — | FM0110264 | 1990-07-30 | Active | |
| DIAMOND SOUND MOBILE D.J. SERVICES | — | FM0124466 | 1991-11-07 | Active | |
| DIAMOND SPECTRUM AUDIO | — | FM0025833 | 1978-02-06 | Active | |
| DIAMOND SPIRIT COACHING | — | FM0420841 | 2006-03-31 | Active | |
| DIAMOND SPORT RENTALS | — | FM0159414 | 1994-04-29 | Active | |
| DIAMOND SPRINGS ICE COMPANY | — | FM0226650 | 1997-09-12 | Active | |
| DIAMOND SPRINGS MARKETING | — | FM0234510 | 1998-02-18 | Active | |
| DIAMOND SPRINGS WATER BOTTLING COOPERATIVE | — | CP1002546 | 2021-11-05 | Active | |
| DIAMOND SPRINTING | — | FM0746922 | 2018-05-10 | Active | |
| DIAMOND SPRINTING | — | FM0867880 | 2022-01-18 | Active | |
| DIAMOND STABLES | — | FM0266108 | 1999-09-15 | Active | |
| DIAMOND STACKING CO. LTD. | — | BC0455490 | 1993-10-01 | Active | |
| DIAMOND STANDARD | — | FM0807331 | 2020-05-29 | Active | |
| DIAMOND STANDARD CLEAN | — | FM0597139 | 2012-12-11 | Active | |
| DIAMOND STANDARD CLEANING SERVICES | — | FM0643806 | 2014-09-30 | Active | |
| DIAMOND STANDARD PROPERTIES INC. | — | BC1271558 | 2020-10-26 | Active | |
| DIAMOND STAR AVIATION INC. | — | BC1046684 | 2015-08-21 | Active | |
| DIAMOND STAR CANADA FASHION LTD. | — | BC1207473 | 2019-05-03 | Inactive | |
| DIAMOND STAR CANADA FASHION LTD. | — | BC1441927 | 2023-09-28 | Inactive | |
| DIAMOND STAR CLEANING | — | FM0376994 | 2004-07-21 | Inactive | |
| DIAMOND STAR COACHING | — | FM0274932 | 2000-02-16 | Active | |
| DIAMOND STAR COACHING INC. | — | BC0662047 | 2003-01-15 | Inactive | |
| DIAMOND STAR DEVELOPMENTS | — | FM0642952 | 2014-09-18 | Inactive | |
| DIAMOND STAR ENTERPRISES INC. | — | BC0708000 | 2004-11-05 | Inactive | |
| DIAMOND STAR INSULATION LTD. | — | BC1054117 | 2015-11-02 | Inactive | |
| DIAMOND STAR MOVING | — | FM0827125 | 2020-12-11 | Active | |
| DIAMOND STAR NAILS | — | FM0609857 | 2013-06-18 | Active | |
| DIAMOND STAR NAILS | — | FM0490377 | 2008-11-18 | Active | |
| DIAMOND STAR NAILS LTD. | — | BC0870803 | 2010-01-08 | Inactive | |
| DIAMOND STAR PRODUCTIONS LTD. | — | BC1254993 | 2020-06-29 | Inactive | |
| DIAMOND STAR TRADING INC. | — | BC0991082 | 2014-01-15 | Active | |
| DIAMOND STAR VENTURES INC. | — | BC0536648 | 1997-02-14 | Inactive | |
| DIAMOND STARZ HOLDINGS LTD. | — | BC0847641 | 2009-03-13 | Inactive | |
| DIAMOND STARZ HOLDINGS LTD. | — | BC0681763 | 2003-11-21 | Inactive | |
| DIAMOND STATE ENTERPRISE LTD. | — | BC0398078 | 1990-12-13 | Active | |
| DIAMOND STEAK & SEAFOOD HOUSE LTD. | — | BC0545937 | 1997-07-02 | Active | |
| DIAMOND STEAMWASH | — | FM0865049 | 2021-12-11 | Active | |
| DIAMOND STEEL LTD. | — | BC0064124 | 1965-04-07 | Inactive | |
| DIAMOND STEREO & T.V. LTD. | — | BC0106018 | 1972-01-25 | Inactive | |
| DIAMOND STITCH AUTO UPHOLSTERY | — | FM0072475 | 1986-09-24 | Active | |
| DIAMOND STITCHED UPHOLSTERY | — | FM0822973 | 2020-11-08 | Active | |
| DIAMOND STONE MASONRY | — | FM0546767 | 2011-01-11 | Active | |
| DIAMOND STORE FIXTURES INC. | — | BC0396243 | 1990-11-09 | Inactive | |
| DIAMOND STRATEGIES LTD. | — | BC1434867 | 2023-08-23 | Active | |
| DIAMOND STRENGTH FITNESS & TRAINING | — | FM0703106 | 2016-11-15 | Active | |
| DIAMOND STRIKE ANCHOVY | — | FM0150307 | 1993-09-29 | Active | |
| DIAMOND STUCCO LTD. | — | BC0553738 | 1997-11-06 | Inactive | |
| DIAMOND STUDIOS INCORPORATED | — | BC0730594 | 2005-07-22 | Inactive | |
| DIAMOND SUDS LTD. | — | BC0023215 | — | Inactive | |
| DIAMOND SUMMIT STAR HOLDINGS | — | FM0115044 | 1991-01-21 | Active | |
| DIAMOND SUN SERVICES | — | FM0121916 | 1991-08-08 | Active | |
| DIAMOND SUN SOLAR INC. | — | BC1437716 | 2023-09-07 | Inactive | |
| DIAMOND SUNRISE HOLDINGS INC. | — | BC0776473 | 2006-12-06 | Inactive | |
| DIAMOND SUPERIOR EXTERIOR PRESSURE WASHING AND CONTRACTING | — | FM1071848 | 2025-03-28 | Active | |
| DIAMOND SURFACE PREPARATION LTD. | — | A0122746 | 2022-04-22 | Inactive | |
| DIAMOND SWEETS & RESTAURANT LTD. | — | BC0716124 | 2005-02-10 | Active | |
| DIAMOND SYSTEMS INC./SYSTEMES DIAMANTES INC. | — | A0036088 | 1992-10-05 | Inactive | |
| DIAMOND T CONTRACTING INC. | — | BC1451144 | 2023-11-23 | Active | |
| DIAMOND T DIVINE TIMING | — | FM0744666 | 2018-04-10 | Active | |
| DIAMOND T ENTERPRISE | — | FM0297538 | 2001-03-12 | Active | |
| DIAMOND T ENTERPRISES | — | FM0151406 | 1993-10-28 | Inactive | |
| DIAMOND T ENTERPRISES | — | FM0261472 | 1999-06-22 | Active | |
| DIAMOND T ENTERPRISES LTD. | — | C0242551 | — | Inactive | |
| DIAMOND T HIGH TECH PRODUCTS | — | FM0105383 | 1990-03-05 | Active | |
| DIAMOND T HORSESHOEING SERVICES | — | FM0120295 | 1991-06-18 | Active | |
| DIAMOND T LOGGING | — | FM0001220 | 1967-06-23 | Active | |
| DIAMOND T RANCH LTD. | — | BC0047630 | — | Inactive | |
| DIAMOND T VENTURES INC. | — | BC0735810 | 2005-09-23 | Active | |
| DIAMOND T. ENTERPRISES | — | FM0456362 | 2007-07-25 | Active | |
| DIAMOND T. HOLDINGS LTD. | — | BC0125774 | 1974-03-06 | Inactive | |
| DIAMOND T.V. & RADIO SERVICE | — | FM0001879 | 1967-12-05 | Active | |
| DIAMOND TALENT INC. | — | BC0874945 | 2010-03-01 | Inactive | |
| DIAMOND TASK FORCE SECURITY | — | FM0678349 | 2016-01-12 | Active | |
| DIAMOND TAX FILING SOLUTIONS | — | FM0732683 | 2017-11-09 | Active | |
| DIAMOND TAXI CAB ASSOCIATION LIMITED | — | BC0009206 | — | Inactive | |
| DIAMOND TAXI CO. | — | FM0018488 | 1975-07-02 | Active | |
| DIAMOND TAXI LTD. | — | BC0629200 | 2001-06-12 | Inactive | |
| DIAMOND TEAM CONTRACTING B.C. LTD. | — | BC1169896 | 2018-06-28 | Inactive | |
| DIAMOND TECHNICAL GROUP LTD. | — | BC0630246 | 2001-06-29 | Inactive | |
| DIAMOND TECHNOLOGIES GROUP INC. | — | BC0866562 | 2009-11-18 | Inactive | |
| DIAMOND TELECOM SERVICES INC. | — | A0111032 | 2019-09-12 | Active | |
| DIAMOND TERRACE | — | FM0423560 | 2006-05-04 | Active | |
| DIAMOND THREE CONTRACTING AND RECYCLING (1996) LTD. | — | BC0525940 | 1996-08-27 | Active | |
| DIAMOND TIDE TRADING INC. | — | BC0408293 | 1991-06-25 | Inactive | |
| DIAMOND TIE & LUMBER CO. LTD. | — | BC0027982 | — | Inactive | |
| DIAMOND TIER SOLUTIONS INC. | — | BC1548856 | 2025-07-18 | Active | |
| DIAMOND TILES | — | FM0318961 | 2002-03-12 | Active | |
| DIAMOND TILES AND STONES TRADING LTD. | — | BC1156576 | 2018-03-14 | Active | |
| DIAMOND TILES INC. | — | BC0654374 | 2002-09-12 | Inactive | |
| DIAMOND TIP ROOFING | — | FM0571058 | 2011-11-29 | Active | |
| DIAMOND TIP ROOFING LTD. | — | BC1284665 | 2021-01-19 | Active | |
| DIAMOND TIRE DISTRIBUTORS LTD. | — | BC0309573 | 1986-05-23 | Inactive | |
| DIAMOND TOPSOIL LTD. | — | BC0589429 | 1999-07-22 | Inactive | |
| DIAMOND TOUCH | — | FM0826373 | 2020-12-06 | Active | |
| DIAMOND TOUCH AUTO CARE | — | FM1020145 | 2023-06-28 | Active | |
| DIAMOND TOUCH CLEANING LTD. | — | BC1381924 | 2022-10-10 | Active | |
| DIAMOND TOUCH CLEANING LTD. | — | BC1082020 | 2016-07-07 | Inactive | |
| DIAMOND TOUCH CLEANING SERVICES | — | FM0665995 | 2015-07-22 | Active | |
| DIAMOND TOUCH DETAILING | — | FM0242064 | 1998-06-19 | Active | |
| DIAMOND TOUCH FLAT DECK TRAILERS | — | FM0787096 | 2019-09-10 | Active | |
| DIAMOND TOURS & TRAVEL | — | FM0046046 | 1983-02-17 | Active | |
| DIAMOND TOURS INC. | — | BC0305157 | 1986-02-25 | Inactive | |
| DIAMOND TOWING | — | FM0007578 | 1971-02-25 | Active | |
| DIAMOND TOWING (1988) | — | FM0094875 | 1989-02-16 | Active | |
| DIAMOND TOWING (1991) | — | FM0118282 | 1991-05-01 | Active | |
| DIAMOND TOWING INC. | — | BC1466204 | 2024-02-15 | Active | |
| DIAMOND TRADING CO. | — | FM0248273 | 1998-10-20 | Active | |
| DIAMOND TRAININGS ASSOCIATION | — | S0012941 | 1977-02-18 | Inactive | |
| DIAMOND TRANSPORT CO. LTD. | — | BC0028135 | — | Inactive | |
| DIAMOND TRANSPORT LTD. | — | BC0091881 | — | Inactive | |
| DIAMOND TRANSPORTATION LTD. | — | BC0609565 | 2000-06-23 | Inactive | |
| DIAMOND TRAVELS | — | FM0338406 | 2003-01-21 | Active | |
| DIAMOND TRAVELS LTD. | — | BC0556472 | 1997-12-24 | Inactive | |
| DIAMOND TREE ENERGY LTD. | — | A0070164 | 2007-02-08 | Inactive | |
| DIAMOND TREE ENERGY LTD. | — | A0061321 | 2004-02-20 | Inactive | |
| DIAMOND TREE ENTERPRISES | — | FM0214785 | 1997-02-21 | Active | |
| DIAMOND TREE RESOURCES LTD. | — | A0066523 | 2005-11-25 | Inactive | |
| DIAMOND TREE RESOURCES LTD. | — | A0068690 | 2006-08-08 | Inactive | |
| DIAMOND TREE SERVICE | — | FM0773719 | 2019-04-08 | Active | |
| DIAMOND TREE SERVICE LTD. | — | BC0456665 | 1993-10-22 | Inactive | |
| DIAMOND TRIANGLE PROJECTS INC. | — | BC0440224 | 1993-02-03 | Inactive | |
| DIAMOND TRIANGLE REAL ESTATE EQUITY GROWTH INC. | — | BC0441190 | 1993-02-17 | Inactive | |
| DIAMOND TRUCK & CAR WASH CORP. | — | BC1558076 | 2025-09-22 | Active | |
| DIAMOND TRUCKLINES | — | A0106257 | 2018-06-12 | Inactive | |
| DIAMOND TUBE STEAK | — | FM0159413 | 1994-04-29 | Active | |
| DIAMOND VALE COAL AND IRON MINES LIMITED | — | QE0000793 | — | Inactive | |
| DIAMOND VALE COLLIERIES LIMITED | — | QE0002123 | — | Inactive | |
| DIAMOND VALLEY ELECTRIC LTD. | — | BC1200764 | 2019-03-12 | Active | |
| DIAMOND VALLEY ELECTRIC LTD. | — | A0116864 | 2021-02-25 | Inactive | |
| DIAMOND VALLEY EXPRESS LTD. | — | BC0531721 | 1996-11-26 | Inactive | |
| DIAMOND VALLEY HOMES LTD. | — | BC0893516 | 2010-10-22 | Inactive | |
| DIAMOND VALLEY LOGGING LTD. | — | BC0562239 | 1998-04-01 | Inactive | |
| DIAMOND VAN CONVERSIONS LTD. | — | BC0240383 | 1981-08-05 | Inactive | |
| DIAMOND VAPZ LTD. | — | BC0998365 | 2014-04-02 | Inactive | |
| DIAMOND VAULT | — | FM0639356 | 2014-07-24 | Active | |
| DIAMOND VEIN JEWELRY LTD. | — | BC1533504 | 2025-03-29 | Active | |
| DIAMOND VENDING CO. | — | FM0189817 | 1995-11-22 | Active | |
| DIAMOND VENDING LTD. | — | BC0612248 | 2000-08-15 | Inactive | |