The 29th Battalion was an infantry battalion of the Australian Army. First formed in 1915 for service during the First World War it fought in the trenches of the Western Front in France and Belgium before being disbanded in 1918. In 1921 it was re-raised as a unit of Australia's part-time military forces before being amalgamated with the 22nd Battalion in 1930. It was later re-raised in its own right and, following the outbreak of the Second World War, undertook garrison duties in Australia before being amalgamated with the 46th Battalion to form the 29th/46th Battalion in late 1942.