Two submarines of the Royal Australian Navy (RAN) have been named HMAS Otway.
- HMAS Otway (1927), an launched in 1926 and transferred to the Royal Navy in 1931.
- , an launched in 1966, and decommissioned in 1994. The casing and fin are preserved in a public park in the inland town of Holbrook, New South Wales.
See also
- , a Royal Navy armed merchant cruiser sunk during World War I.
- , a non-commissioned of the RAN launched in 2022.