The Groundlings is an improvisational comedy troupe based in Los Angeles, California. The troupe was formed by Gary Austin in 1974 and uses an improv format influenced by Viola Spolin to produce sketches and improvised scenes. Many Groundlings performers have gone on to success in movies and television, including several who have become cast members and writers on Saturday Night Live," MAD TV," and RENO 911! ."

Notable Groundlings alumni include:

• Laraine Newman
• Pat Morita
• Cassandra Peterson
• Paul Reubens
• Jon Lovitz
• Phil Hartman
• Julia Sweeney
• Lisa Kudrow
• Ana Gasteyer
• Phil LaMarr
• Michael McDonald
• Will Ferrell
• Cheri Oteri
• Wendi McLendon-Covey (Deputy Johnson in RENO911!)
• Chris Kattan
• Chris Parnell
• Jennifer Coolidge
• Maya Rudolph
• Will Forte
• Rachael Harris