Son of the Guardsman is an American film serial released in 1946 by Columbia Pictures. It was the 31st of the 57 serials produced by that studio.

Son of the Guardsman is a rare serial with a period setting, in this case 12th century England. The serial is largely based on the Robin Hood legends, to the extent of including outlaws from Sherwood Forest, but it does not include or reference Robin Hood himself.

The serial was produced by the notoriously cheap Sam Katzman and directed by Derwin Abrahams. Bob Shaw starred as the heroic noble-turned-outlaw David Trent with Charles King as his villainous uncle Sir Edgar Bullard.