Marietta Sirleaf, born April 12, 1970 in New Jersey, and better known simply as Retta, is an American stand-up comedienne and actress who has appeared in several films and television shows. Retta has performed stand-up on Comedy Central's "Premium Blend", and was the host of the behind-the-scenes feature True Blood: Live From the Set.
- Slackers (2002)
- Dickie Roberts: Former Child Star (2003)
- Fracture (2007)
- Sex and Death 101 (2007)
- First Sunday (2008)
- Retta's aunt by marriage is Ellen Johnson Sirleaf, the first female president of Liberia.
- Retta's parents were Liberian immigrants.