This is a list of past baseball playoff champions of the Intercounty Baseball League, an independent baseball league in Ontario.
The team with most championships (16) are the Stratford Nationals/Kraven Knits/Hillers.
*Source: Intercounty Baseball League 2011 Information Guide &i Record Book
| Team | Number of Championships |
|---|---|
| Barrie Baycats | 8 |
| Brantford Red Sox | 15 |
| Cambridge (Galt) Terriers | 13 |
| Guelph C-Joys/Maple Leafs/Royals | 9 |
| Hamilton Cardinals | 1 |
| Kitchener Panthers/Dutchmen | 12 |
| London Majors/Pontiacs | 14 |
| St. Thomas Elgins | 6 |
| Stratford Hillers/Kraven Knits/Nationals | 16 |
| Toronto Maple Leafs | 8 |
| Waterloo Tigers | 2 |
| Welland Jackfish | 2 |