William Russell Watrous III (born June 8, 1939) is a jazz trombonist. He is perhaps best known by casual fans of jazz music for his rendition of Sammy Nestico‘s arrangement of the Johnny Mandel ballad “A Time for Love,” which he recorded on a 1993 album of the same name. A self-described “bop-oriented” player, he is well known among fellow trombonists as a master technician and for his mellifluous sound.

Watrous’ father, also a trombonist, introduced him to the instrument at an early age. While serving in the U.S. Navy, Watrous studied with jazz pianist and composer Herbie Nichols. His first professional performances were in Billy Butterfield‘s band.