|Cincinnati Reds – No. 60|
|Born: October 30, 1960|
|September 4, 1982, for the Pittsburgh Pirates|
|Last MLB appearance|
|June 22, 1989, for the Minnesota Twins|
|Earned run average||4.23|
Byron Lee Tunnell (born October 30, 1960) is an American professional baseball coach and retired player. He played as a pitcher in Major League Baseball (MLB) and Nippon Professional Baseball. He was the bullpen coach for the Milwaukee Brewers of MLB. Tunnell attended Baylor University in Waco, Texas where he was a star pitcher on the Bears team from 1979-1981.
Tunnell pitched all or part of six seasons in the majors, between 1982 and 1989, for the Pittsburgh Pirates, St. Louis Cardinals, and Minnesota Twins.
In 483 innings pitched in 132 games, Tunnell committed only one error in 122 total chances (33 putouts, 88 assists) for a stellar .992 fielding percentage.
He also pitched three seasons in Nippon Professional Baseball, from 1991 until 1993, for the Fukuoka Daiei Hawks.
Following his playing career, Tunnell coached in the minor leagues for several years, including a brief stint as interim pitching coach with the Cincinnati Reds in 2006.
In July 2012, he was named interim bullpen coach of the Milwaukee Brewers, a position he held until 2018, when his contract was not renewed by the Brewers front office.