Chessie is an American experimental music group consisting of Stephen Gardner and Ben Bailes.

Gardner started Chessie in 1994, while he was a member of the Washington, D.C. post-rock band Lorelei. His first full-length as Chessie, Signal Series, was issued in 1998 and was named Best Dance and DJ Album that year by Amazon.com. In 2000 Gardner was joined by Bailes and they have since worked as a duo. While Overnight received critical acclaim and a spot on a New York Times music critic's best-of-2001 list, a follow-up record did not materialize until 2008, when the group released Manifest on Plug Research. The repetitive nature of their music is inspired by trains and railroads.

In 2022, Gardner became president and CEO of Amtrak.