Jennifer Carpenter (born December 7, 1979) is an American actress who is known for her role as Debra Morgan in the Showtime series Dexter, for which she earned a Saturn Award in 2009, and also for playing Rebecca Harris in the CBS television series Limitless.

In 2019, she played Erica Shepherd, the lead role in the NBC drama The Enemy Within. In 2020, Carpenter voiced Sonya Blade in the direct-to-video martial arts film Mortal Kombat Legends: Scorpion's Revenge (2020), a role she reprised in the sequel Mortal Kombat Legends: Battle of the Realms (2021).

Early life
Carpenter was born in Louisville, Kentucky, the daughter of Catherine (née Mitchell) and Robert Carpenter. She attended St. Raphael the Archangel and then Sacred Heart Academy. She trained at the Walden Theatre Conservatory program, and later at New York City's Juilliard School (Drama Division Group 31: 1998–2002).

Before graduation, she was cast in the 2002 Broadway revival of Arthur Miller's The Crucible starring Liam Neeson and Laura Linney.