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

After performing as a company player with The Groundlings for a number of years, Parnell was hired to join 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 hiring four new cast members required Lorne Michaels to dismiss two cast members; he chose to lay off Parnell and Jerry Minor over Horatio Sanz, Rachel Dratch, and Maya Rudolph.