Thomas Christopher 'Chris' Parnell (born February 5, 1967) is an American comedic actor, best known as a cast member on Saturday Night Live from 1998 to 2006, and currently for his recurring role as Dr. Leo Spaceman on the Emmy Award-winning NBC comedy series 30 Rock. Parnell is currently one of the main voices on the FX animated comedy Archer. In 2010, Parnell co-starred with his former SNL colleague Horatio Sanz on the Comedy Central series Big Lake.

After several years performing as a member of The Groundlings troupe, Parnell was hired to the cast of Saturday Night Live as a featured player on September 26, 1998, and was promoted to repertory player the following season. In the summer of 2001, budget cuts and the hiring of four new cast members forced Lorne Michaels to fire two cast members; he chose to fire Parnell and Jerry Minor instead of Horatio Sanz, Rachel Dratch, and Maya Rudolph.

During his time on SNL, Parnell appeared in numerous sketches and commercial parodies, and also did memorable impressions of various celebrities. One of his most popular sketches is 'Lazy Sunday', a rap video he made with Andy Samberg about buying cupcakes and going to see The Chronicles of Narnia. He also performed raps about hosts Jennifer Garner, Britney Spears, Kirsten Dunst, and Ashton Kutcher.

In the summer of 2006, Lorne Michaels announced that four cast members would be fired due to budget cuts, but did not say who. On September 22, 2006, it was announced that three cast members were fired: Parnell, Horatio Sanz, and Finesse Mitchell. This effectively made him the only SNL performer Lorne Michaels has fired twice, although Parnell said in a 2008 interview for The Sound of Young America podcast that this time he was not opposed to leaving because he had already been considering leaving after that season, but added that he probably would have stayed for one more season if he had been asked to return. He worked on SNL for eight seasons; at the time, only four people (Darrell Hammond, Tim Meadows, Kevin Nealon, and Al Franken) had been cast members longer. He has since appeared on the show in uncredited cameos, most recently in 2008, impersonating television hosts Tom Brokaw, Jim Lehrer, and Bob Schieffer.