Jamie Donnelly (born May 8, 1947) is an American actress.
Born in Teaneck, New Jersey, Donnelly is best known as Jan, one of the Pink Ladies from the film version of Grease, a role she got at the age of 31.
Five years before playing Jan in the Grease movie, she played Jan in the play on Broadway. Later, she was in the United States premiere of The Rocky Horror Show starring as Magenta and the Usherette. She appeared on stage at the Roxy theatre in Los Angeles with Tim Curry and Meat Loaf in 1974, when the show opened. She is featured on the original Roxy cast recording in her role, singing the opening song Science Fiction/Double Feature. She went with most of the Roxy cast to reprise her roles on Broadway in 1975. Several years later she was called to read for Grease. She's living with her husband in Los Angeles.
During her stage career, she appeared in a musical version of "Tarzan".