Two submarines of the Royal Australian Navy (RAN) have been named HMAS Otway.
- HMAS Otway (1927), an Odin class submarine launched in 1926 and transferred to the Royal Navy in 1931.
- HMAS Otway (S 59), an Oberon class submarine launched in 1966, and decommissioned in 1994. The outer hull is preserved at an inland park in Holbrook, New South Wales.
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