The 12th Light Horse Regiment was a light horse regiment of the Australian Army. It was originally raised in 1915 as part of the Australian Imperial Force for service during the First World War. After fighting at Gallipoli as reinforcements, the regiment served in the Sinai and Palestine campaign against the Ottoman Empire before being disbanded after the war in late 1919. In 1921, the regiment was re-raised as a part-time unit of the Citizens Force based in New South Wales, before being amalgamated with the 24th Light Horse Regiment in 1936. In 1938, the regiment was reformed and during the Second World War it undertook garrison duties in Australia after being converted first to a motor regiment and then later to an armoured car regiment. It was disbanded in 1943 without having seen activ