The 2/4th Anti-Tank Regiment was an Australian Army anti-tank artillery regiment that was raised for service during the Second World War as part of the all volunteer Second Australian Imperial Force. It was formed in November 1940, and was assigned to the 8th Division. In early 1942, the regiment took part in the Malayan campaign and the Battle of Singapore before being captured when Singapore fell to the Japanese at which time most of its personnel became prisoners of war. Over 170 members of the regiment died in captivity before the end of the war in August 1945.