| 2005 Ontario Kia Cup | |
| Host City: | Whitby, Ontario |
| Arena: | Iroquois Park Sports Centre |
| Dates: | February 6-13 |
| Winner: | Team Middaugh |
| Curling Club: | St. George's Golf and Country Club, Toronto, Ontario |
| Skip: | Wayne Middaugh |
| Third: | Graeme McCarrel |
| Second: | Joe Frans |
| Lead: | Scott Bailey |
| Prev: | 2004 |
| Next: | 2006 |
The 2005 Kia Cup, southern Ontario men's provincial curling championship was held February 6–13 at the Iroquois Park Sports Centre in Whitby, Ontario. The winning team of Wayne Middaugh would represent Ontario at the 2005 Tim Hortons Brier in Edmonton, Alberta.
| Skip | Third | Second | Lead | |
|---|---|---|---|---|
| Paul Wood | ||||
| Robert Dickson | ||||
| John Steski | ||||
| Ken McDermot | ||||
| Mark Gamble | ||||
| Craig Savill | ||||
| Mark Rodgers | Jeff Norman | |||
| Scott Bailey | ||||
| Rob Brockbank | ||||
| Steve Lodge |
| Skip | Club | Wins | Losses | |
|---|---|---|---|---|
| 8 | 1 | |||
| 7 | 2 | |||
| 6 | 3 | |||
| 6 | 3 | |||
| 5 | 4 | |||
| 4 | 5 | |||
| 4 | 5 | |||
| Ilderton Curling Club | 3 | 6 | ||
| 1 | 8 | |||
| 1 | 8 |