| Tourney Name: | Championship of Australia |
| Year: | 1975 |
| Other Titles: | Winfield Cup - 1975 Champions of Australia Series |
| City: | Adelaide |
| Dates: | 11–13 October 1975 |
| Num Teams: | 4 |
| Venues: | 1 |
| Champion Other: | North Melbourne |
| Count: | 1 |
| Second Other: | Norwood |
| Third Other: | West Perth |
| Fourth Other: | Glenorchy |
| Matches: | 4 |
| Prevseason: | 1974 |
| Nextseason: | 1976 (NFL Championship) |
The 1975 Championship of Australia was the 19th edition of the Championship of Australia, an ANFC-organised national club Australian rules football tournament between the champion clubs from the VFL, the SANFL, the WANFL and the Tasmanian State Premiership.
This was the last Championship of Australia title to be held before the competition was expanded the following year into the NFL Championship Series.
| Team | Nickname | League | Qualification | Participation (bold indicates winners) | |
|---|---|---|---|---|---|
| North Melbourne | Kangaroos | VFL | Winners of the 1975 Victorian Football League | 1st | |
| Norwood | Redlegs | SANFL | Winners of the 1975 South Australian National Football League | 3rd | |
| West Perth | Falcons | WANFL | Winners of the 1975 Western Australian National Football League | 1st | |
| Glenorchy | Magpies | TANFL | Winners of the 1975 Tasmanian State Premiership | 1st |
| Adelaide |
|---|
| Football Park |
| Capacity: 67,000 |