Jon Dreyer is a Boston-area bassist. He has performed NEA jazz masters Sheila Jordan and Dave Liebman, and also with Harvey Diamond, James Merenda, Adam Janjigian, Doug Johnson, Yoko Miwa, Hankus Netsky, Alan Rowe, Mark Shilansky, Alexei Tsiganov, Frank Wilkins, Jerry Bergonzi, George Garzone, Grace Kelly, Roy Nathanson, Dominique Eade, Jason Palmer, Phil Grenadier, Harvie S, Francisco Mela, Mike Connors, Dave Fox, Scott Goulding, Bob Gullotti, Joe Hunt, Steve Langone, Miki Matsuki, Austin McMahon, and most of the rest of the Boston jazz community.

Mostly self-taught on bass, he has studied with Richard Davis, Cameron Brown, Marcus McLaurine, Harvey Diamond, and Ran Blake.

He is also a mostly classical cellist. He has studied cello with Glenn Garlick, Ervin Klinkon and Ben Levinson, and as well as a master class with János Starker. He was a member of the Boston Philharmonic and the Fairfax Symphony and has performed with the Masterworks Chorale, the Kennedy Center Opera House Orchestra and the National Gallery Orchestra.