Debra Jo Rupp is an American actress. She is best known for her starring role as Kitty Forman in the Fox sitcom That '70s Show (1998–2006) and its Netflix sequel series That '90s Show (2023–present). Rupp also had roles in the NBC sitcom Friends (1997–1998), the ABC animated series Teacher's Pet (2000–2002) and its 2004 sequel film, the ABC sitcom Better with You (2010–2011), and the Marvel Cinematic Universe Disney+ miniseries WandaVision (2021) and Agatha All Along (2024).