Casey Christopher Driessen (born December 6, 1978, in Owatonna, Minnesota, United States) is an American bluegrass fiddler and singer.
He is a graduate of the Berklee College of Music, where he studied with Matt Glaser, and an alumnus of Homewood-Flossmoor High School in Flossmoor, Ill.
He has performed with Béla Fleck, Abigail Washburn, Steve Earle, Tim O'Brien, Darrell Scott, Jim Lauderdale, Lee Ann Womack, Mark Schatz, John Doyle, and Chris Thile.
In November 2006 Driessen toured China and Tibet with the Sparrow Quartet (which also includes Béla Fleck, Abigail Washburn, and cellist Ben Sollee).
With fiddler Darol Anger and Rushad Eggleston, he has released an instructional DVD entitled Chops & Grooves: Rhythmic Explorations for Bowed Instruments.