Lionel Colin Matthews, GC, MC (15 August 1912 – 2 March 1944) was an Australian Army officer in World War II. He was posthumously awarded the George Cross, the highest award for heroism or courage not in the face of the enemy, that could be awarded to a member of the Australian armed forces at the time. Matthews was born in Adelaide, South Australia, and was schooled there before moving to Victoria. He trained as a signalman in the Royal Australian Naval Reserve before joining the Militia in April 1939. Commissioned as an officer in the Australian Corps of Signals, Matthews transferred to the 8th Division of the Second Australian Imperial Force after the outbreak of World War II.