Jason Bittner (born January 11, 1970 in Niskayuna, New York) is an American drummer, best known as the drummer for American metal band Shadows Fall. He is also the current drummer for Overkill since 2017, and was the drummer for the thrash metal bands Toxik from 2013 to 2014 and Flotsam and Jetsam from 2014 to 2017.
He has won numerous awards including the Modern Drummer Magazine reader poll for #1 Up and Coming Drummer of 2004, and in 2005, #1 Best Recorded Performance for the Shadows Fall album The War Within, #1 Metal drummer (2005/2006) #2 Clinician DRUM! magazine 2011. He is recognized for his tight playing, extensive skill with double bass drumming, particularly his ability to play complex patterns at high speeds, and his familiarity with numerous styles of drumming, including Latin and jazz.