William Glenn Abbott (born February 16, 1951) is an American former Major League Baseball (MLB) pitcher and former pitching coach for the Syracuse Mets.

During an 11-year baseball career, he pitched for the Oakland Athletics (1973–76), Seattle Mariners (1977–81; 1983), and Detroit Tigers (1983–84).

Abbott played baseball and basketball at North Little Rock High School and had planned to continue with both sports in college.

Abbott retired Ike Hampton, Jerry Remy and Dave Chalk in order in the sixth inning before being replaced by Paul Lindblad and later Rollie Fingers.

[citation needed] He pitched four seasons with the Athletics going 13−16 with a 4.08 ERA in 73 games, 45 for starts.

Abbott said this about being chosen by the Mariners: Wes Stock, my pitching coach in Oakland, had gone up there, and I was excited about going to a new ballclub, but I never dreamed the team would be so crummy.

As listed below, Abbott has had a long career with many different stops as a minor league pitching coach.