Christopher Caudwell is the pseudonym of Christopher St. John Sprigg (20 October 1907 - 12 February 1937), British Marxist writer, thinker and poet.

He joined the Communist Party of Great Britain in Poplar in the East End of London. In December 1936 he drove an ambulance to Spain and joined the International Brigades once there, training as a machine-gunner at Albacete before becoming a machine-gun instructor and group political delegate. He also edited a wall newspaper.

Caudwell was killed in action on 12 February 1937 during the first day of the battle of the Jarama Valley at the age .of 29