William Emanuel "Billy" Cobham (born May 16, 1944, Panama) is a Panamanian American jazz drummer, composer and bandleader, who permanently relocated to Switzerland during the late 1970s.

Coming to prominence in the late 1960s and early 1970s with trumpeter Miles Davis and then with Mahavishnu Orchestra, and on countless CTI releases, Cobham according to Allmusic's reviewer is "generally acclaimed as fusion's greatest drummer with an influential style that combines explosive power and exacting precision.