Charles "Charlie" Sage (birth unknown – death unknown) was a Welsh rugby union and professional rugby league footballer who played in the 1920s. He played representative level rugby union (RU) for Glamorgan County RFC, and at club level for Mountain Ash RFC, and representative level rugby league (RL) for Wales, and at club level for Hunslet, as a prop, or hooker, i.e. number 8 or 10, or 9, during the era of contested scrums.