| ENTREPAIRS 1507366 · TMA815453 | The Canadian Youth Business Foundation | 9 Electronics14 Jewellery16 Paper+4 | Registered | 2012 |
| ENTREPOSE 1709195 · TMA1258627 | an individual | 1 Chemicals6 Metal7 Machines+5 | Registered | 2024 |
| ENTREPEER 1507367 · TMA815452 | The Canadian Youth Business Foundation | 9 Electronics14 Jewellery16 Paper+4 | Registered | 2012 |
| ENTREPOSE 2305098 | an individual | 37 Construction39 Transport42 Science | Pending | 2024 |
| ENTREFLIX 2030182 | an individual | 16 Paper18 Leather25 Clothing+4 | Pending | 2020 |
| ENTRIX 2183604 · TMA1282680 | Entrix GmbH | 9 Electronics39 Transport42 Science | Registered | 2025 |
| ENTRYIQ 1935065 · TMA1118762 | Therma-Tru Corp. | 6 Metal9 Electronics19 Building | Registered | 2022 |
| ENTRÉE 1708737 · TMA965554 | Mitten Inc. | 6 Metal19 Building35 Advertising | Registered | 2017 |
| ENTRESTO 1637821 · TMA978869 | an individual | 5 Pharmaceuticals | Registered | 2017 |
| ENTRENCH 1632931 · TMA889636 | Corteva Agriscience LLC | 1 Chemicals | Registered | 2014 |
| ENTREC 1587721 · TMA866418 · design | ENTREC Corporation | 39 Transport | Registered | 2013 |
| ENTREC 1587533 · TMA866417 | ENTREC Corporation | 39 Transport | Registered | 2013 |
| entree 1550916 · TMA874337 | an individual | 25 Clothing | Registered | 2014 |
| Entropy 1515764 · TMA832585 | an individual | 9 Electronics16 Paper25 Clothing+3 | Registered | 2012 |
| ENTROPY 1335546 · TMA705524 | INTERFACE INC. | 27 Carpets | Registered | 2008 |
| ENTRÉ 1294868 · TMA750682 | Starkey Laboratories, Inc. (a Minnesota corporation) | 9 Electronics | Registered | 2009 |
| ENTROPY 1205536 · TMA696329 | an individual | 9 Electronics35 Advertising42 Science | Registered | 2007 |
| ENTRAIN 0896273 · TMA530736 | Groupe Dallaire inc. | 41 Education | Registered | 2000 |
| ENTREE 0604871 · TMA355903 | Kraft Heinz Canada ULC | 30 Coffee | Registered | 1989 |
| ENTRENET 0597911 · TMA354838 | ENTRENET COMMUNICATIONS INC. | 38 Telecommunications | Registered | 1989 |
| ENTRE 0593236 · TMA405045 | Global Total Office (an Ontario limited partnership) | 20 Furniture | Registered | 1992 |
| ENTRELEC 0300718 · TMA152460 | TE Connectivity Solutions GmbH | 6 Metal7 Machines9 Electronics+5 | Registered | 1967 |
| ENTREX 2351571 | Owner not listed | 35 Advertising41 Education42 Science | Pending | 2024 |
| Entropya 2319484 | an individual | 9 Electronics37 Construction42 Science | Pending | 2023 |
| Entris 2254615 | Sartorius Lab Instruments GmbH & Co. KG | 9 Electronics | Pending | 2023 |