HMAS Otway was an Oberon-class submarine of the Royal Australian Navy (RAN). One of the first four Oberon-class boats ordered for the RAN, Otway was built in Scotland during the mid-1960s, and commissioned into naval service in 1968. The submarine was decommissioned in 1994. The submarine's upper casing, fin, and stern are preserved at Holbrook, New South Wales.