Elizabeth Stamatina "Tina" Fey is an American actress, comedian, writer and producer, known for her work on the NBC sketch comedy series Saturday Night Live (SNL, 1998–2006), the critically acclaimed NBC comedy series 30 Rock (2006–2013), and such films as Mean Girls (2004), Baby Mama (2008), Date Night (2010), Admission (2013), and Muppets Most Wanted (2014).

Fey first broke into comedy as a featured player in the Chicago-based improvisational comedy group The Second City. She then joined SNL as a writer, later becoming head writer and a performer, known for her position as co-anchor in the Weekend Update segment. In 2004, she co-starred in and wrote the screenplay for Mean Girls, which was partly adapted from a book. After leaving SNL in 2006, she created the television series 30 Rock, a situation comedy loosely based on her experiences at SNL. In the series, Fey portrays the head writer of a fictional sketch comedy series. In 2008, she starred in the comedy film Baby Mama, alongside former SNL co-star Amy Poehler. Fey next appeared alongside Steve Carell in the 2010 comedy film Date Night and with Will Ferrell in the animated film Megamind.