| 2005 Ontario Scott Tournament of Hearts | |
| Dates: | January 24–30 |
| Winner: | Jenn Hanna |
| Curling Club: | Ottawa Curling Club, Ottawa |
| Skip: | Jenn Hanna |
| Third: | Pascale Letendre |
| Second: | Dawn Askin |
| Lead: | Stephanie Hanna |
| Alternate: | Joëlle Sabourin |
| Coach: | Bob Hanna |
| Finalist: | Krista Scharf |
| Prev: | 2004 |
| Next: | 2006 |
The 2005 Ontario Scott Tournament of Hearts, Ontario's provincial women's curling championship, was held January 24–30 at the Rideau Curling Club in Ottawa. The winning team of Jenn Hanna would go on to represent Ontario at the 2005 Scott Tournament of Hearts in St. John's, Newfoundland and Labrador.
Hanna's win would be the first of two provincial championships in her career, not winning her second championship until 2016. It would also be the lone provincial championship for her third Pascale Letendre and the first of two for her sister, lead Stephanie Hanna. Her second Dawn Askin would later move to Manitoba to play lead for Jennifer Jones and win several provincial, national, two world championships and an Olympic gold there.
Hanna's rink from the nearby Ottawa Curling Club had a slow start at the event, and had a 1-4 record at one point. However, they pulled off eight straight wins to win the championship. At the national Scott Tournament of Hearts, the rink had a similar slow start before rallying to make the playoffs before losing in the final to Manitoba's Jones.
The defending champion Sherry Middaugh rink failed to qualify.
| Skip | Third | Second | Lead | Curling Club | |
|---|---|---|---|---|---|
| Fort William Curling Club, Thunder Bay | |||||
| Ottawa Curling Club, Ottawa | |||||
| Uxbridge and District Curling Club, Uxbridge | |||||
| Brant Curling Club, Brantford | |||||
| Fort William Curling Club, Thunder Bay | |||||
| Sudbury Curling Club, Sudbury | |||||
| Skip | W | L | |
|---|---|---|---|
| Chrissy Cadorin (Guelph) | 7 | 2 | |
| Krista Scharf (Fort William) | 6 | 3 | |
| Jo-Ann Rizzo (Brant) | 6 | 3 | |
| Jenn Hanna (Ottawa) | 5 | 4 | |
| Janet McGhee (Uxbridge) | 5 | 4 | |
| Kathy Brown (Sutton) | 5 | 4 | |
| Tara George (Fort William) | 4 | 5 | |
| Kim Moore (North Halton) | 3 | 6 | |
| Elaine Uhryn (Soo) | 3 | 6 | |
| Dawn Schwar (Sudbury) | 1 | 8 |
January 24
January 24
January 25
January 25
January 26
January 26
January 27
January 27
January 28
January 28 & 29
January 29
January 29
January 30
January 30
| Qualification Method | Berths | Qualifying Team | |
|---|---|---|---|
| Northwestern Ontario | 2 | Krista Scharf Tara George | |
| Northeastern Ontario | 2 | Dawn Schwar Elaine Uhryn | |
| East Regional Qualifier | 2 | Jenn Hanna Janet McGhee | |
| West Regional Qualifier | 2 | Kim Moore Jo-Ann Rizzo | |
| Challenge Round Qualifiers | 2 |
Regional winners in bold. Challenge round qualifiers in bold and italics.
| Zone | Winner | Club | |
|---|---|---|---|
| 1A | Jenn Hanna | Ottawa | |
| 1B | Cheryl McBain | Ottawa | |
| 2A | Darcie Walker | Rideau | |
| 2B | Rideau | ||
| 3A | Tracy Samaan | Granite of West Ottawa | |
| 3B | Debra Karbashewski | Carleton Place | |
| 4A | Pauline Bakonyi | Quinte | |
| 4B | Joyce Potter* | Rideau | |
| 5A | Lisa Payne | Peterborough | |
| 5B | Jennifer Cowan | Beaverton | |
| 6A | Kathy Brown | Sutton | |
| 6B | Janet McGhee | Uxbridge | |
| 7A | Bayview | ||
| 7B | Delaine Payton | Scarboro | |
| 8A | Colleen Madonia | Mississaugua | |
| 8B | Kelly Cochrane | High Park | |
| 9A | Kim Moore | North Halton | |
| 9B | Kristy Russell | Brampton | |
| 10A | Coldwater | ||
| 10B | Wanda Fleming | Elmvale | |
| 11A | Vicki Gregg | Paisley | |
| 11B | Anne Dunn* | Galt | |
| 12A | Dawn Sherk | Galt | |
| 12B | Elaine Voisin | Westmount | |
| 13A | Stacey Brandwood | Glendale | |
| 13B | Jordan Davies | Burlington | |
| 14A | Kori VanRyssel | Harriston | |
| 14B | Amy Mackay* | St. Catharines | |
| 15A | Jo-Ann Rizzo | Brant | |
| 15B | Karen Bell | Brant | |
| 16A | Amie Coward | Kingsville | |
| 16B | Carrie Lindner | St. Catharines |