Baroness is a fictional character from the G.I. Joe: A Real American Hero toyline by Hasbro, originally appearing in the first issue of the G.I. Joe: A Real American Hero comic series by Marvel Comics in June, 1982. The Baroness is a villainess, associated with the G.I. Joe Team's nemesis Cobra.

G.I. Joe: A Real American Hero is a military-themed line of action figures and toys in Hasbro's G.I. Joe franchise. The toyline lasted from 1982 to 1994, producing well over 500 figures and 250 vehicles and playsets. The line reappeared in 1997 and has continued in one form or another to the present day. It was supported by two animated series as well as a major comic series published by Marvel Comics.