RugbyWA Premier Grade
| Sport | Rugby union |
|---|---|
| Formerly known as | West Australian Rugby Union First Grade |
| Instituted | 1928 |
| Number of teams | 11 |
| Holders | Wanneroo (2025) |
| Most titles | Nedlands (16) |
| Relegation to | RugbyWA Championship Grade |
The RugbyWA Premier Grade, known as the Fortescue Premier Grade under a naming rights deal, is the highest level of domestic club rugby played in Western Australia. It was formed in 1928 and was the first consistent competition for rugby union in Western Australia. It is competed annually form early April to the end of August, the annual pre-season tournament, the Rendezvous Hotel Perth Scarborough Challenge Cup commencing in March. The competition is managed by RugbyWA. The Premier Grade is contested by 11 teams from the Greater Perth area.
The RugbyWA Premier Grade is offered in two competitions – the Men's Premier Grade and Women's Premier Grade. The Women's Premier Grade runs from early May until the end of August, with seven teams forming the competition.
In 2022, RugbyWA partnered with Stan Sport to broadcast one Premier Grade game per round, with occasional double headers alongside the Women's competition.