Lisa Valerie Kudrow (; born July 30, 1963) is an American actress, comedian, writer, and producer. After making guest appearances in several television sitcoms, including Cheers, she came to prominence with her recurring role of Ursula in Mad About You (1993-1999). Kudrow gained worldwide recognition for portraying Phoebe Buffay on the television sitcom Friends (1994–2004), which received several accolades, including a Primetime Emmy Award for Outstanding Supporting Actress in a Comedy Series from six nominations, two Screen Actors Guild Awards from twelve nominations and a Golden Globe Award nomination. The character was widely popular during the airing of the series and was later recognized as one of the greatest female characters in American television.

Kudrow starred in the cult comedy film Romy and Michele's High School Reunion (1997) and followed it with an acclaimed performance in the romantic comedy The Opposite of Sex (1998), which won her the New York Film Critics Circle Award for Best Supporting Actress and a nomination for the Independent Spirit Award for Best Supporting Female. In 2005, she went on to produce, write and star in the HBO comedy series The Comeback, which was revived nine years later for an a second season. Kudrow received two Primetime Emmy Award for Outstanding Lead Actress in a Comedy Series nominations for both seasons.

Kudrow also starred and produced the Primetime Emmy Award nominated Showtime program Web Therapy (2011–2015). She is also one of the executive producers of the TLC reality program Who Do You Think You Are, which gained three nominations for the Primetime Emmy Award for Outstanding Reality Program.

Kudrow has also made several notable film appearances, including roles in Analyze This (1999), Dr. Dolittle 2 (2001), P.S. I Love You (2007), Bandslam (2008), Hotel for Dogs (2009), Easy A (2010), Neighbors (2014) and its sequel Neighbors 2: Sorority Rising (2016), The Girl on the Train (2016), and The Boss Baby (2017).