| IronGate Networks | — | 606263 | — | Dissolved | |
| IronGenie Inc. | — | 778767 | — | Active | |
| IronMind Wellness | — | 766239 | — | Active | |
| IronMind Wellness Inc. | — | 766161 | — | Active | |
| IronRock Shepherds | — | 766491 | — | Active | |
| IronTree Glamping Inc. | — | 741974 | — | Active | |
| IronTree Logging Ltd. | — | 682861 | — | Active | |
| Ironclad Elite Plumbing | — | 777740 | — | Active | |
| Ironcore Concrete Ltd. | — | 774911 | — | Active | |
| Ironfab Holdings Ltd. | — | 717043 | — | Active | |
| Ironflow Holdings Inc. | — | 683459 | — | Dissolved | |
| Ironflow Investments Inc. | — | 684386 | — | Active | |
| Ironflow Technologies | — | 646397 | — | Dissolved | |
| Irongate Holdings | — | 605416 | — | Dissolved | |
| Ironhorse Tosa | — | 684397 | — | Dissolved | |
| Ironmen Athletic Club Inc. | — | 509726 | — | Dissolved | |
| Ironshield Roofing | — | 777417 | — | Active | |
| Ironshore Canada | — | 648528 | — | Dissolved | |
| Ironshore Canada Ltd. | — | 648527 | — | Dissolved | |
| Ironside exteriors | — | 762774 | — | Active | |
| Ironstone Enterprises | — | 680283 | — | Dissolved | |
| Ironstone Enterprises Ltd. | — | 684450 | — | Active | |
| Ironware Development | — | 691372 | — | Active | |
| Ironwood Builders | — | 721988 | — | Active | |
| Ironwood Business Brokers Inc. | — | 767894 | — | Active | |
| Ironwood Hill Farm Ltd. | — | 512449 | — | Active | |
| Ironwood Landscape & Design | — | 688998 | — | Dissolved | |
| Ironwood Legacy LP | — | 770896 | — | Active | |
| Ironwood Manufactured Homes Inc. | — | 701829 | — | Active | |
| Ironwood Modular Solutions | — | 767642 | — | Active | |
| Irradia Land 102 Inc. | — | 667408 | — | Dissolved | |
| Irradia Land 105 Inc. | — | 667409 | — | Dissolved | |
| Irresistible Good | — | 643614 | — | Dissolved | |
| Irrus Consulting Inc. | — | 690078 | — | Dissolved | |
| Irvin's Mobility Transit & Shuttle | — | 349441 | — | Dissolved | |
| Irvine & Co. Event Rentals Limited | — | 755598 | — | Active | |
| Irvine Brother's Trophies | — | 618599 | — | Dissolved | |
| Irvine Enterprises Inc. | — | 708587 | — | Active | |
| Irvine Phone Repair Inc. | — | 709451 | — | Active | |
| Irving Advanced Seedling Production | — | 653241 | — | Active | |
| Irving Air Service Inc. | — | 8560 | — | Active | |
| Irving BLUEcanoe | — | 623937 | — | Dissolved | |
| Irving BLUEcanoe | — | 740945 | — | Dissolved | |
| Irving BLUEcanoe | — | 644261 | — | Dissolved | |
| Irving BLUEcanoe | — | 772678 | — | Active | |
| Irving Big Stop | — | 740944 | — | Dissolved | |
| Irving Big Stop | — | 644262 | — | Dissolved | |
| Irving Big Stop | — | 772679 | — | Active | |
| Irving Big Stop | — | 623936 | — | Dissolved | |
| Irving Blending & Packaging | — | 778300 | — | Active | |
| Irving Blending & Packaging | — | 669313 | — | Dissolved | |
| Irving Blending & Packaging | — | 730296 | — | Dissolved | |
| Irving Canaport GP Company, Limited | — | 609679 | — | Dissolved | |
| Irving Canaport LP Company, Limited | — | 618811 | — | Dissolved | |
| Irving Consumer Products | — | 680106 | — | Active | |
| Irving Consumer Products Limited Les Produits de Consommation Irving Limitée | — | 609751 | — | Merged | |
| Irving Consumer Products Limited Les Produits de Consommation Irving Limitée | — | 680104 | — | Active | |
| Irving Energy | — | 738888 | — | Dissolved | |
| Irving Energy | — | 653633 | — | Dissolved | |
| Irving Energy | — | 778283 | — | Active | |
| Irving Energy Distribution & Marketing | — | 641614 | — | Dissolved | |
| Irving Energy Distribution & Marketing | — | 738887 | — | Dissolved | |
| Irving Energy Distribution & Marketing | — | 778284 | — | Active | |
| Irving Energy Inc. | — | 769928 | — | Active | |
| Irving Environmental Services | — | 708765 | — | Active | |
| Irving Environmental Services | — | 346074 | — | Dissolved | |
| Irving Equipment | — | 673819 | — | Active | |
| Irving Equipment Limited Équipement Irving Limitée | — | 638887 | — | Active | |
| Irving Forest Energy | — | 653242 | — | Active | |
| Irving Forest Products | — | 774247 | — | Active | |
| Irving Forest Products Limited/Les Produits Forestiers Irving Limitée | — | 30992 | — | Active | |
| Irving Glen Shipping | — | 649162 | — | Active | |
| Irving Industrial Manufacturing | — | 607992 | — | Dissolved | |
| Irving Industrial Rentals | — | 617644 | — | Active | |
| Irving Industries | — | 348457 | — | Active | |
| Irving Industries, Limited | — | 510959 | — | Merged | |
| Irving Licensing Inc. Licences Irving Inc. | — | 618330 | — | Active | |
| Irving Lubricants | — | 778306 | — | Active | |
| Irving Lubricants | — | 644258 | — | Dissolved | |
| Irving Lubricants | — | 730297 | — | Dissolved | |
| Irving Lubricants | — | 623939 | — | Dissolved | |
| Irving Lubrifiants | — | 623940 | — | Dissolved | |
| Irving Lubrifiants | — | 730294 | — | Dissolved | |
| Irving Lubrifiants | — | 644259 | — | Dissolved | |
| Irving Lubrifiants | — | 778309 | — | Active | |
| Irving Mainway | — | 644260 | — | Dissolved | |
| Irving Mainway | — | 772677 | — | Active | |
| Irving Mainway | — | 623938 | — | Dissolved | |
| Irving Mainway | — | 740946 | — | Dissolved | |
| Irving Marine Fleet Holding Corporation | — | 670890 | — | Active | |
| Irving Marine Services Limited | — | 771706 | — | Active | |
| Irving Nature Preserves | — | 774246 | — | Active | |
| Irving Nature Preserves Inc. Les Réserves Naturelles Irving Inc. | — | 506134 | — | Dissolved | |
| Irving Oil Blending & Packaging Inc. | — | 769913 | — | Active | |
| Irving Oil Commercial G.P. | — | 640808 | — | Dissolved | |
| Irving Oil Company, Limited | — | 702960 | — | Dissolved | |
| Irving Oil Company, Limited | — | 705816 | — | Merged | |
| Irving Oil Hangars Limited | — | 704602 | — | Dissolved | |
| Irving Oil Limited | — | 642148 | — | Merged | |
| Irving Oil Limited | — | 674131 | — | Merged | |
| Irving Oil Limited | — | 753685 | — | Active | |
| Irving Oil Marketing G.P. | — | 640809 | — | Dissolved | |
| Irving Oil Marketing Limited | — | 500539 | — | Merged | |
| Irving Oil Operations G.P. | — | 640806 | — | Dissolved | |
| Irving Oil Operations G.P. | — | 622971 | — | Dissolved | |
| Irving Oil Operations General Partner Limited | — | 641400 | — | Merged | |
| Irving Oil Operations Ltd. | — | 641568 | — | Merged | |
| Irving Oil Properties Capital Corporation | — | 663240 | — | Merged | |
| Irving Oil Properties Capital Corporation | — | 686779 | — | Merged | |
| Irving Oil Properties Limited | — | 641145 | — | Merged | |
| Irving Oil Properties Limited | — | 720949 | — | Dissolved | |
| Irving Oil Properties Management Corporation | — | 641399 | — | Merged | |
| Irving Oil Properties SPE Limited | — | 677031 | — | Merged | |
| Irving Oil Property Investments Limited | — | 740957 | — | Dissolved | |
| Irving Oil Property Investments Limited | — | 663241 | — | Merged | |
| Irving Oil Refinery Inc. | — | 769920 | — | Dissolved | |
| Irving Oil Refining G.P. | — | 640803 | — | Dissolved | |
| Irving Oil Retail Quebec Inc. | — | 769915 | — | Dissolved | |
| Irving Oil Retail Sales Inc. | — | 769917 | — | Active | |
| Irving Oil Terminal Operations Inc. | — | 769922 | — | Dissolved | |
| Irving Oil Terminals & Pipelines G.P. | — | 640810 | — | Dissolved | |
| Irving Oil Terminals, Inc. | — | 615479 | — | Dissolved | |
| Irving Oil Transport, Inc. | — | 639573 | — | Active | |
| Irving Oil Transportation Company LLC | — | 77217 | — | Dissolved | |
| Irving Paper | — | 609365 | — | Active | |
| Irving Paper Limited Les Papiers Irving Limitée | — | 503035 | — | Active | |
| Irving Personal Care | — | 680109 | — | Active | |
| Irving Personal Care Limited Les Soins Personnels Irving Limitée | — | 605968 | — | Merged | |
| Irving Products Holding Company Limited | — | 509470 | — | Dissolved | |
| Irving Pulp & Paper | — | 345180 | — | Dissolved | |
| Irving Pulp & Paper | — | 616698 | — | Active | |
| Irving Pulp & Paper LP | — | 729484 | — | Active | |
| Irving Pulp & Paper Management Limited | — | 729466 | — | Active | |
| Irving Pulp & Paper, Limited Les Pâtes & Papier Irving, Limitée | — | 609238 | — | Active | |
| Irving Refined Products Limited | — | 509471 | — | Merged | |
| Irving Retail AC | — | 770885 | — | Active | |
| Irving Retail QC | — | 770887 | — | Dissolved | |
| Irving Services, a division of Irving Shipbuilding Inc. | — | 614582 | — | Dissolved | |
| Irving Shipbuilding Inc. Les Chantiers Maritimes Irving Inc. | — | 507274 | — | Active | |
| Irving Tissue Corporation Les Papiers Irving Incorporée | — | 513359 | — | Merged | |
| Irving Transportation Services Limited Les Services de Transport Irving Limitée | — | 504978 | — | Active | |
| Irving Wallboard | — | 740927 | — | Active | |
| Irving Wallboard | — | 641467 | — | Dissolved | |
| Irving Énergie | — | 778304 | — | Active | |
| Irving Énergie Distribution et Marketing | — | 778282 | — | Active | |
| Irving Énergie Distribution et Marketing | — | 738886 | — | Dissolved | |
| Irving Énergie Distribution et Marketing | — | 643108 | — | Dissolved | |
| Irvingdale Associates | — | 649268 | — | Active | |
| Irvingdale Holdings | — | 627059 | — | Active | |
| Irvingdale Shipping | — | 649161 | — | Active | |
| Isa Auteure | — | 722061 | — | Active | |
| Isa Hydraulic Inc. | — | 718330 | — | Pending | |
| Isa'Bella's clothing and specialties | — | 707038 | — | Dissolved | |
| IsaJo Holdings Ltd. | — | 715786 | — | Merged | |
| Isaac Dunn Painting | — | 721866 | — | Pending | |
| Isaac George Dynamics Ltd. | — | 715678 | — | Active | |
| Isaac Lawson Fashions | — | 653581 | — | Dissolved | |
| Isaac Lawson Stylish Clothiers Inc. | — | 654438 | — | Dissolved | |
| Isaac Soon Academic Services | — | 726401 | — | Pending | |
| Isaac Wells Business Consultancy Practice | — | 750920 | — | Active | |
| Isabel's Cafe LouLou | — | 653788 | — | Dissolved | |
| Isabelle Boudreau C.P. Inc. | — | 648071 | — | Active | |
| Isabelle Garvie consultations carrière | — | 732635 | — | Active | |
| Isabelle Gionet C.P. Inc. | — | 771466 | — | Active | |
| Isabelle Girouard Financial Services Inc. | — | 719275 | — | Active | |
| Isabelle Richard RMT | — | 677525 | — | Dissolved | |
| Isabelle Thériault Inc. | — | 651108 | — | Dissolved | |
| Isabelle Transport Ltee | — | 603468 | — | Dissolved | |
| Isabos Beach Cottages Ltd. | — | 708091 | — | Active | |
| Isagenix | — | 636064 | — | Active | |
| Isagenix | — | 629244 | — | Dissolved | |
| Isagenix Canada | — | 636065 | — | Active | |
| Isagenix Canada | — | 629245 | — | Dissolved | |
| Isagenix Canada, Inc. | — | 629210 | — | Dissolved | |
| Isagenix International | — | 636066 | — | Active | |
| Isagenix International | — | 629759 | — | Dissolved | |
| Isaia e Isaia Canada Ltd. | — | 714517 | — | Active | |
| Isalee Eko Inc. | — | 761487 | — | Active | |
| Isbill Plumbing | — | 631173 | — | Dissolved | |
| Isherwood Gas and Maintenance | — | 778245 | — | Active | |
| Ishmael Construction Services | — | 737548 | — | Active | |
| Ishtar Lumina Systems Inc. | — | 773501 | — | Active | |
| Isi's Belly Dancing | — | 654055 | — | Dissolved | |
| Isie's Country Creations & Fine Art | — | 647037 | — | Dissolved | |
| Isis Information Systems & Integrated Statistics | — | 345230 | — | Dissolved | |
| Isla Cocina Foods | — | 701909 | — | Dissolved | |
| Islamic Society of New Brunswick Inc. | — | 718223 | — | Active | |
| Island Anchor Lineworks | — | 776399 | — | Active | |
| Island Bait Co. Ltd. | — | 620458 | — | Dissolved | |
| Island Bound Charters Ltd. | — | 658562 | — | Pending | |
| Island Breeze Jewelry | — | 711094 | — | Dissolved | |
| Island Breeze Tanning | — | 611022 | — | Dissolved | |
| Island Brothers Lawn Care | — | 766966 | — | Active | |
| Island Choppers Inc. | — | 516112 | — | Dissolved | |
| Island Christian Academy Inc. | — | 25673 | — | Dissolved | |
| Island Coast Seafoods | — | 743020 | — | Dissolved | |
| Island Coast Seafoods Inc. | — | 743687 | — | Active | |
| Island Complete Repair & Renovation | — | 650674 | — | Dissolved | |
| Island Eavestrough | — | 682190 | — | Pending | |
| Island Esthetics | — | 348690 | — | Dissolved | |