Two ships of the Royal Australian Navy have been named HMAS Gascoyne, after the Gascoyne River, the longest river in Western Australia.
- , a River-class frigate laid down in 1942 and paid off in 1966
- , a Huon-class minehunter in service as of 2016
Battle honours
Ships named HMAS Gascoyne are entitled to carry five battle honours:
- New Guinea 1944
- Leyte Gulf 1944
- Lingayen Gulf 1945
- Borneo 1945
- Pacific 1945