Jennifer Marie Morrison is an American actress and director. She is mainly known for her roles as Allison Cameron in the medical-drama series House (2004–2012) and Emma Swan in the ABC adventure-fantasy series Once Upon a Time (2011–2018). She has also portrayed Zoey Pierson, one of Ted Mosby's love interests, on the comedy series How I Met Your Mother, Winona Kirk, mother of James T. Kirk in the 2009 science-fiction film Star Trek, and Tess Conlon in the 2011 sports drama film Warrior. She made her feature-film directorial debut with Sun Dogs (2017).

Allison Cameron, M.D., is a fictional character on the Fox medical drama House, portrayed by American actress Jennifer Morrison. An immunologist, Cameron was a member of Dr. Gregory House's team of handpicked specialists at Princeton–Plainsboro Teaching Hospital's Department of Diagnostic Medicine. She returned for the final episode of the series, "Everybody Dies".