| 1024 | SC Johnson Professional |
| 411 | Seasons Care Dietitian Network |
| 203 | Senior Protection Inc |
| 431 | ServiceMaster Restore Kitchener-Waterloo, Guelph & Niagara |
| 222 | SFI Medical Equipment Solutions |
| 312 | SGP Purchasing Partner Network |
| 1215 | SignMakers |
| 225 | Silver Fox Pharmacy / Silver Linings Healthcare |
| 1007 | Silver Meridian |
| 1323 | Silverts |
| 609 | Sobeys National Pharmacy Group |
| 1137 | Softworks |
| 531 | Sparkle Solutions |
| 322 | Specialty Furniture Inc. |
| 1102 | StaffScheduleCare |
| 716 | StaffStat |
| 634 | Steelite International Canada LTD |
| 1226 | Stevans Sales and Marketing |
| 1029 | Sunrise Juices Ltd. |
| 1031 | Superior Facility Services |
| 913 | Surge Learning Inc. |
| 212 | Swish Maintenance Limited |
| 1023 | Sysco Canada |
| 624 | Tarkett Commercial Flooring |
| 825 | TCS Canada |
| 234 | TeksMed Services |
| 1021 | Tendable |
| 332 | The Institute for Education Research |
| 602 | The Leslie Group |
| 210 | The Ontario Caregiver Organization |
| 331 | The Stevens Company |
| 1039 | TP-Link Canada |
| 808 | Trillium HR |
| 1212 | Troy Life & Fire Safety Ltd. |
| 729 | UKG |
| 233 | UMS Healthcare Agency |
| 408 | Unity Connected Solutions Inc. |
| 503 | Univerus Media |
| 409 | Vernacare |
| 311 | VersaNet Solutions |
| 426 | VIDA Dietetics |
| 333 | Vocara |
| 821 | Voyago Transdev NEMT |
| 537 | VTech Technologies Canada Ltd. |
| 622 | Welbi |
| 303 | Wentoo |
| 831 | WeRPN - the Registered Practical Nurses Association of Ontario |
| 1026 | WiConnect Corp. |
| 1009 | WINMAR (Canada) International, Ltd. |
| 1032 | Winsham Fabrik Canada Ltd |