| DUFFERIN MAINTENANCE SERVICES | — | FM0131400 | 1992-06-25 | Active | |
| DUFFERIN PROPERTIES LTD. | — | BC0109504 | 1972-06-02 | Inactive | |
| DUFFERIN RECREATION | — | FM0088848 | 1988-06-24 | Active | |
| DUFFERIN RECREATION LTD. | — | BC0292511 | 1985-05-14 | Inactive | |
| DUFFERIN SENIORS VILLAGE 2 LLP | — | LL0000997 | 2016-01-27 | Inactive | |
| DUFFERIN SENIORS VILLAGE 3 LLP | — | LL0001109 | 2016-09-20 | Active | |
| DUFFERIN SENIORS VILLAGE LLP | — | LL0000197 | 2007-01-02 | Inactive | |
| DUFFERIN SERVICES LTD. | — | BC0818098 | 2008-02-29 | Active | |
| DUFFERIN TRAVEL INC. | — | A0084962 | 2011-12-23 | Active | |
| DUFFERIN WHOLESALE AND SERVICE | — | FM0088847 | 1988-06-24 | Active | |
| DUFFERINNEIGHBOURHOODASSOCIATION | — | S0071554 | 2019-06-24 | Active | |
| DUFFERS DEN | — | FM0824122 | 2020-11-17 | Active | |
| DUFFERS DESIGNS | — | FM0191321 | 1995-12-15 | Active | |
| DUFFERS HOCKEY LEAGUE INC. | — | BC0594854 | 1999-10-28 | Inactive | |
| DUFFERS HOLDINGS INC. | — | C1553509 | 2025-08-20 | Active | |
| DUFFERS HOLDINGS LTD. | — | BC0270368 | 1983-10-25 | Inactive | |
| DUFFERS RESTAURANT AND LOUNGE INC. | — | BC1033079 | 2015-04-10 | Inactive | |
| DUFFERS' SERVICES LTD. | — | BC0102297 | 1971-08-20 | Inactive | |
| DUFFEY CONTRACTING | — | FM0539763 | 2010-09-30 | Active | |
| DUFFEY LAKE CONTRACTING LTD. | — | BC0110872 | 1972-07-26 | Inactive | |
| DUFFEY LAKE HOLDINGS, INC. | — | BC1180057 | 2018-09-19 | Active | |
| DUFFEY LAKE MINES LTD. (NON-PERSONAL LIABILITY) | — | BC0069654 | — | Inactive | |
| DUFFEY NATURAL LABORATORIES INC. | — | BC1019813 | 2014-11-24 | Inactive | |
| DUFFEY POWER PRODUCTS | — | FM0138075 | 1992-12-22 | Active | |
| DUFFEY'S BISTRO & BILLIARDS INC. | — | BC0433783 | 1992-10-08 | Inactive | |
| DUFFFERS SPORTS BAR | — | FM0647634 | 2014-11-25 | Active | |
| DUFFIE BOOKS | — | FM0467588 | 2008-01-09 | Inactive | |
| DUFFIELD CHEN CONTRACTING LTD. | — | BC1217735 | 2019-07-29 | Active | |
| DUFFIELD HOLDINGS LTD. | — | BC1275920 | 2020-11-23 | Active | |
| DUFFIELD INVESTMENTS LTD. | — | BC0219654 | 1980-11-03 | Active | |
| DUFFIELD PHOTOGRAPHY | — | FM0597330 | 2012-12-13 | Active | |
| DUFFIELD VENTURES LTD. | — | BC0378205 | 1989-12-12 | Inactive | |
| DUFFIELD WOOD BOAT WORKS | — | FM0312336 | 2001-11-16 | Active | |
| DUFFIN CONSULTING | — | FM0243469 | 1998-07-16 | Active | |
| DUFFIN CONTRACTING & DESIGN | — | FM0581135 | 2012-04-15 | Active | |
| DUFFIN COVE FISHING COMPANY LTD. | — | BC0332360 | 1987-08-26 | Active | |
| DUFFIN COVE MOTEL (1988) LTD. | — | BC0355293 | 1988-11-25 | Inactive | |
| DUFFIN COVE MOTEL LTD. | — | BC0266775 | 1983-07-20 | Inactive | |
| DUFFIN COVE RESORT | — | FM0702533 | 2016-11-07 | Active | |
| DUFFIN FINANCIAL SERVICES INC. | — | A0142159 | 2026-05-26 | Active | |
| DUFFIN PASSAGE CHARTERS | — | FM0327243 | 2002-07-12 | Active | |
| DUFFIN'S DONUTS INC. | — | BC0407359 | 1991-06-10 | Active | |
| DUFFIN'S DONUTS STORE | — | FM0069820 | 1986-05-26 | Inactive | |
| DUFFLE BAG STUDIOS | — | FM1062193 | 2024-12-06 | Active | |
| DUFFLECOAT STUDIO | — | FM1083751 | 2025-08-07 | Active | |
| DUFFLES PROPERTIES INC. | — | BC0239550 | 1981-07-21 | Inactive | |
| DUFFLEUP PLATFORM ELEVATION BAGS AND ACCESSORIES LTD. | — | BC1502726 | 2024-09-19 | Active | |
| DUFFLITE ENTERPRISES | — | FM0564907 | 2011-09-01 | Active | |
| DUFFS DRYWALL | — | FM0367908 | 2004-03-16 | Active | |
| DUFFSHOT RECORDS INC. | — | BC0884249 | 2010-06-23 | Inactive | |
| DUFFUS COLLEGE INC. | — | BC0230425 | 1981-03-26 | Inactive | |
| DUFFUS ENTERPRISES LTD. | — | BC0240050 | 1981-07-29 | Inactive | |
| DUFFUS FOODS INC. | — | BC0463204 | 1994-01-25 | Inactive | |
| DUFFUS IRRIGATION SERVICES | — | FM0237746 | 1998-04-17 | Active | |
| DUFFUS PROPERTIES LTD. | — | BC0220230 | 1980-11-13 | Inactive | |
| DUFFUS SALES LTD. | — | BC0141948 | 1975-10-16 | Inactive | |
| DUFFUS/HUNTER PROPERTIES LTD. | — | BC0232557 | 1981-04-21 | Inactive | |
| DUFFY BAKER CONSTRUCTION | — | FM0632389 | 2014-04-24 | Active | |
| DUFFY BAKER CONSTRUCTION CORP. | — | BC1099923 | 2016-12-13 | Active | |
| DUFFY BAKER CONTRACTING | — | FM0783572 | 2019-07-25 | Active | |
| DUFFY BIOMEDICAL | — | FM0644609 | 2014-10-10 | Active | |
| DUFFY BROTHER'S CONTRACTING | — | FM0454883 | 2007-07-04 | Active | |
| DUFFY CARE | — | FM0804912 | 2020-04-29 | Active | |
| DUFFY CONTRACTING | — | FM0584109 | 2012-05-24 | Active | |
| DUFFY CONTRACTING | — | FM0366814 | 2004-03-03 | Active | |
| DUFFY CREEK CATTLE CO. LTD. | — | BC0301559 | 1985-12-10 | Inactive | |
| DUFFY CREEK PROPERTIES LTD. | — | BC0179774 | 1978-09-01 | Inactive | |
| DUFFY ENTERPRISES LTD. | — | BC1043722 | 2015-07-23 | Active | |
| DUFFY ENTERTAINMENT | — | FM0279537 | 2000-05-01 | Active | |
| DUFFY EQUITIES LTD. | — | BC0121816 | 1973-09-17 | Inactive | |
| DUFFY INVESTMENTS INC. | — | BC1599977 | 2026-07-16 | Active | |
| DUFFY LAKE ENTERPRISES | — | FM0356043 | 2003-09-23 | Active | |
| DUFFY LEE INTERNATIONAL | — | FM0194323 | 1996-02-19 | Active | |
| DUFFY LIFE & FAMILY COVERAGE LTD. | — | BC1531473 | 2025-03-14 | Active | |
| DUFFY MANAGEMENT | — | FM0011293 | 1973-01-17 | Active | |
| DUFFY PEAK EXPLORATIONS LIMITED | — | A0058258 | 2002-12-05 | Inactive | |
| DUFFY RETAIL SECURITY | — | FM0007339 | 1971-01-08 | Active | |
| DUFFY RETAIL SECURITY LTD. | — | BC0098275 | — | Inactive | |
| DUFFY SHOPPING SERVICES LTD. | — | A0010952 | — | Inactive | |
| DUFFY SYSTEMS LTD. | — | BC0919541 | 2011-09-02 | Inactive | |
| DUFFY'S APPAREL LTD. | — | BC0348752 | 1988-07-19 | Active | |
| DUFFY'S BROILER LTD. | — | BC0136563 | 1975-04-14 | Inactive | |
| DUFFY'S CLEANERS LTD. | — | BC0326911 | 1987-05-20 | Inactive | |
| DUFFY'S CONSULTING | — | FM0280265 | 2000-05-11 | Active | |
| DUFFY'S DAYCARE | — | FM0270640 | 1999-11-24 | Active | |
| DUFFY'S DONUTS | — | FM0307761 | 2001-08-27 | Active | |
| DUFFY'S DOORS & MORE LTD. | — | BC0662239 | 2003-01-17 | Active | |
| DUFFY'S GRAPHICS AND DESIGN | — | FM0141820 | 1993-04-05 | Active | |
| DUFFY'S HOLDINGS INC. | — | BC0830939 | 2008-07-24 | Inactive | |
| DUFFY'S HOLDINGS LTD. | — | BC0159474 | 1977-03-22 | Inactive | |
| DUFFY'S LICENSEE INC. | — | BC0757473 | 2006-05-11 | Inactive | |
| DUFFY'S LIQUOR STORE INC. | — | BC0669072 | 2003-05-05 | Inactive | |
| DUFFY'S OLD-TIMERS HOCKEY ASSOCIATION | — | S0033175 | 1995-02-08 | Inactive | |
| DUFFY'S PERFORMANCE LTD. | — | BC0058980 | 1964-01-16 | Inactive | |
| DUFFY'S PROPERTY SERVICES | — | FM0266447 | 1999-09-20 | Active | |
| DUFFY'S PUB INC. | — | BC0236712 | 1981-06-10 | Active | |
| DUFFY'S SHOES LTD. | — | BC0176721 | 1978-06-16 | Inactive | |
| DUFFY'S TAXI | — | FM0046552 | 1983-03-16 | Active | |
| DUFFY'S TAXI | — | FM0152540 | 1993-11-22 | Active | |
| DUFFY'S TAXI | — | FM0029882 | 1979-02-06 | Inactive | |
| DUFFY'S TOTAL TAN LTD. | — | BC0536718 | 1997-02-17 | Inactive | |
| DUFFY'S TRUCKING LTD. | — | BC0166547 | 1977-10-05 | Inactive | |
| DUFFY-MOTT COMPANY, INC. | — | A0020661 | 1983-04-20 | Inactive | |
| DUFFYS LANDSCAPING | — | FM0630173 | 2014-03-26 | Active | |
| DUFFYS SALMON CHARTERS | — | FM0405885 | 2005-09-03 | Active | |
| DUFLOORZ HARDWOOD AND LAMINATES | — | FM0322212 | 2002-04-30 | Active | |
| DUFLOORZ HARDWOODS INC. | — | BC0979094 | 2013-08-29 | Active | |
| DUFONIKS VENTURES INC. | — | BC0642731 | 2002-02-22 | Inactive | |
| DUFOR HOLDINGS LTD. | — | BC0113693 | 1972-11-24 | Inactive | |
| DUFORD AND COMPANY CPA LTD. | — | BC0840494 | 2008-11-30 | Active | |
| DUFORD ART STUDIO | — | FM0204362 | 1996-08-12 | Active | |
| DUFORD DIGITAL INC. | — | BC1337376 | 2021-12-10 | Active | |
| DUFORT CONTRACTING | — | FM0884111 | 2022-06-21 | Active | |
| DUFORT CONTRACTING LTD. | — | BC1506591 | 2024-10-13 | Active | |
| DUFOUR CONSULTING | — | FM0548401 | 2011-01-31 | Active | |
| DUFOUR CONSULTING SERVICES | — | FM0738531 | 2018-01-25 | Active | |
| DUFOUR CONTRACTING LTD. | — | BC0411004 | 1991-08-19 | Inactive | |
| DUFOUR FISH SOCIETY | — | S0059419 | 2012-02-20 | Inactive | |
| DUFOUR SWISS EUROPEAN CAPITAL AG GP LTD. | — | BC1277460 | 2020-12-02 | Inactive | |
| DUFRESNE & TOLLER MERCHANTS LTD. | — | BC1074774 | 2016-05-06 | Inactive | |
| DUFRESNE AGENCIES | — | FM0033045 | 1980-02-19 | Active | |
| DUFRESNE AGENCIES LTD. | — | BC0235850 | 1981-06-01 | Active | |
| DUFRESNE DEVELOPMENTS INC. | — | BC0261488 | 1983-03-16 | Inactive | |
| DUFRESNE FINE ART | — | FM0148331 | 1993-08-16 | Active | |
| DUFRESNE FINE ART SERVICES INC. | — | BC0379972 | 1990-01-12 | Inactive | |
| DUFRESNE FURNITURE & APPLIANCES INC. | — | A0049706 | 1999-06-14 | Inactive | |
| DUFRESNE FURNITURE AND APPLIANCES | — | FM0261733 | 1999-06-24 | Active | |
| DUFRESNE LOGGING | — | FM0103809 | 1990-01-08 | Active | |
| DUFRESNE MECHANICAL SERVICE | — | FM0577866 | 2012-03-05 | Active | |
| DUFRESNE PHOTO/DESIGN | — | FM0632060 | 2014-04-18 | Active | |
| DUFRESNE REALTY ULC | — | C1158162 | 2018-03-26 | Active | |
| DUFRESNE RENTALS | — | FM0564366 | 2011-08-25 | Active | |
| DUFRESNE RETAIL SOLUTIONS GROUP INC. | — | A0104804 | 2018-01-22 | Active | |
| DUFRESNE RETAIL SOLUTIONS GROUP INC. | — | A0067608 | 2006-04-05 | Inactive | |
| DUFRESNE TRANSPORT LTD. | — | BC0210181 | 1980-05-23 | Inactive | |
| DUFT AUTO LTD. | — | A0131209 | 2024-02-17 | Active | |
| DUFT ENTERPRISES CORP. | — | BC0578932 | 1999-01-26 | Inactive | |
| DUFTAN HOLDINGS LTD. | — | BC0178201 | 1978-07-24 | Inactive | |
| DUG DUZ IT | — | FM0586839 | 2012-06-29 | Active | |
| DUG N. CONTRACTING | — | FM0304282 | 2001-06-26 | Active | |
| DUG SHENG HONG ENTERPRISES LTD. | — | BC0944015 | 2012-06-23 | Inactive | |
| DUG'S BACKHOE SERVICE | — | FM0205361 | 1996-08-28 | Active | |
| DUG'S DIGGINS SUPPLIES LTD. | — | BC0179399 | 1978-08-24 | Inactive | |
| DUG'S EXCAVATING | — | FM0648697 | 2014-12-11 | Active | |
| DUG'S HANDYMAN SERVICES | — | FM0618269 | 2013-10-09 | Active | |
| DUG'S TUGS LTD. | — | BC0180098 | 1978-09-12 | Inactive | |
| DUG-OUT SNOW REMOVAL | — | FM0511383 | 2009-09-17 | Active | |
| DUG-RITE UNDERGROUND SERVICING | — | FM0173488 | 1995-01-20 | Active | |
| DUGA IMPORT EXPORT COMPANY | — | FM0205515 | 1996-09-03 | Active | |
| DUGA PASTA BAR AND GRILL | — | FM0280019 | 2000-05-08 | Active | |
| DUGAL ENTERPRISES INC. | — | BC0347748 | 1988-06-28 | Inactive | |
| DUGAL ENTERPRISES LTD. | — | BC0232315 | 1981-04-15 | Inactive | |
| DUGAL HOLDINGS LTD. | — | BC0126904 | 1974-04-08 | Inactive | |
| DUGALD INVESTMENT COMPANY LTD. | — | BC0159155 | 1977-03-14 | Inactive | |
| DUGALO INVESTMENTS LTD. | — | BC0369262 | 1989-07-13 | Inactive | |
| DUGAN DOHERTY HOLDINGS INC. | — | BC1250934 | 2020-05-22 | Active | |
| DUGAN LAKE DOG BOARDING | — | FM0409340 | 2005-10-25 | Active | |
| DUGAN LAKE LOGGING LTD. | — | BC0133894 | — | Inactive | |
| DUGAN LAKE RANCH SOCIETY | — | S0070259 | 2018-11-08 | Inactive | |
| DUGAN LAKE RANCHES LTD. | — | BC0086461 | 1969-05-07 | Inactive | |
| DUGANDA HOLDINGS LTD. | — | BC0235962 | 1981-06-02 | Inactive | |
| DUGARO DUDDY KOLODRUBSKY & ASSOCIATES PRIVATE WEALTH MANAGEMENT | — | FM0878922 | 2022-05-03 | Active | |
| DUGARO DUDDY KOLODRUBSKY & ASSOCIATES PRIVATE WEALTH MANAGEMENT | — | FM0878921 | 2022-05-03 | Active | |
| DUGARO FINANCIAL SERVICES LTD. | — | BC1367481 | 2022-06-14 | Active | |
| DUGARO HOLDINGS LTD. | — | BC0338163 | 1987-12-23 | Active | |
| DUGAS CONSTRUCTION | — | FM0162091 | 1994-06-10 | Active | |
| DUGAS CONTRACTING LTD. | — | BC0808650 | 2007-11-16 | Active | |
| DUGAS LASER ENGRAVING STUDIO | — | FM1012912 | 2023-03-31 | Active | |
| DUGAS O'QUINN LAW CORPORATION | — | BC0908515 | 2011-04-18 | Active | |
| DUGBOX PET ACCESSORIES LTD. | — | BC1563947 | 2025-11-20 | Active | |
| DUGCOPE CONTRACTING | — | FM0423847 | 2006-05-07 | Active | |
| DUGDALE CONSULTING LTD. | — | BC1526788 | 2025-02-13 | Active | |
| DUGENA'S SALON LTD. | — | BC0238768 | 1981-07-08 | Inactive | |
| DUGG DEVELOPERS LTD. | — | BC1338509 | 2021-12-17 | Inactive | |
| DUGG PAINTING | — | FM0185806 | 1995-08-30 | Active | |
| DUGG PAINTING LTD. | — | BC0540035 | 1997-04-03 | Active | |
| DUGGAL CONSTRUCTION & CONSULTING | — | FM0670822 | 2015-09-24 | Active | |
| DUGGAL DEVELOPMENTS LTD. | — | BC1309139 | 2021-06-08 | Active | |
| DUGGAL ENTERPRISES LTD. | — | BC0548379 | 1997-08-12 | Inactive | |
| DUGGAL HOLDINGS LIMITED | — | BC1165815 | 2018-05-28 | Active | |
| DUGGAL INVESTMENTS LTD. | — | BC0232383 | 1981-04-16 | Inactive | |
| DUGGAL MORTGAGES | — | FM0799178 | 2020-02-19 | Active | |
| DUGGAL PROFESSIONAL CORPORATION | — | A0120621 | 2021-11-16 | Active | |
| DUGGAN & OELRICH CONTRACTORS LTD. | — | BC0043960 | — | Inactive | |
| DUGGAN - WEST INSURANCE SERVICE LTD. | — | BC0153302 | 1976-09-30 | Inactive | |
| DUGGAN ALEXANDER TECHNIQUE | — | FM0307642 | 2001-08-27 | Active | |
| DUGGAN AND DAVIES LIMITED | — | BC0004925 | — | Inactive | |
| DUGGAN BOOKKEEPING | — | FM0834237 | 2021-02-24 | Active | |
| DUGGAN BOOKKEEPING LTD. | — | BC1246045 | 2020-03-31 | Active | |
| DUGGAN BROS. PROPERTIES INC. | — | BC1311862 | 2021-06-23 | Active | |
| DUGGAN BUILDERS INC. | — | BC0581397 | 1999-03-11 | Inactive | |
| DUGGAN CONSULTANTS LTD. | — | BC0393485 | 1990-09-13 | Inactive | |
| DUGGAN DELIVERY | — | FM0348175 | 2003-05-24 | Active | |
| DUGGAN DEVELOPMENTS INC. | — | BC0474235 | 1994-06-03 | Inactive | |
| DUGGAN DEVELOPMENTS LTD. | — | BC0223945 | 1981-01-06 | Inactive | |
| DUGGAN DISPOSAL INC. | — | BC1411506 | 2023-04-19 | Active | |
| DUGGAN ENTERPRISES LTD. | — | BC0234702 | 1981-05-15 | Active | |
| DUGGAN EVENT & SITE SERVICES INC. | — | BC0613721 | 2000-09-07 | Inactive | |
| DUGGAN HOLDINGS LTD. | — | BC0203523 | 1980-01-28 | Active | |
| DUGGAN HOMES | — | FM0499191 | 2009-03-31 | Active | |