HMAS Mombah was a coal lighter and stores ship of the Royal Australian Navy (RAN) between 1923 and 1930 and later during the Second World War between 1944 and 1948. Mombah was constructed at the Cockatoo Island Dockyard for the RAN. She was laid down on 21 October 1920 and launched on 23 April 1921. She was completed on 20 February 1923 and commissioned shortly afterwards. She was sold in 1930 to the Melbourne Harbour Trust.