| Bill Herrion | |
| Birth Date: | 6 April 1958 |
| Alma Mater: | Merrimack |
| Coach Years1: | 1985–1990 |
| Coach Team1: | Boston University (assistant) |
| Coach Years2: | 1990–1991 |
| Coach Team2: | George Washington (assistant) |
| Coach Years3: | 1991–1999 |
| Coach Team3: | Drexel |
| Coach Years4: | 1999–2005 |
| Coach Team4: | East Carolina |
| Coach Years5: | 2005–2023 |
| Coach Team5: | New Hampshire |
| Championships: | 3 America East tournament (1994–1996) 4 America East regular season (1993–1996) |
| Awards: | 4× America East Coach of the Year (1993, 1995, 1996, 1999) |
William Richard Herrion (born April 6, 1958) is an American college basketball coach. From 2005 to 2023,[1] he was the men's head coach at the University of New Hampshire. Prior to coming to UNH, he served as the head coach at East Carolina University and Drexel University. He has been an assistant with Boston University, George Washington University, and the U.S. National Team.
Herrion is a 1981 graduate of Merrimack College.[2]
Herrion's son Ryan played for him at UNH from 2008 through 2012, and was director of operations and video coordinator for the Wildcats from 2013 to 2015.[3]
Herrion's brother Tom formerly served in the NCAA's Division I as the head men's basketball coach at the College of Charleston and an assistant coach at the University of Pittsburgh. Tom is the former head men's basketball coach at Marshall University.
Herrion began his college coaching career in 1985 as an assistant under Mike Jarvis at Boston University. He followed Jarvis to George Washington University before striking out on his own as a head coach. In April 1991, Herrion was hired to coach Drexel after Dayton assistant Tom McConnell turned down the job.[4] Herrion later coached at East Carolina and UNH.
He is one of the most successful men's coaches in the history of the America East Conference. The Drexel Dragons won 3 conference championships in a row under Herrion's leadership from 1994 to 1996. In 1998, on the occasion of the conference's 20th anniversary, he was named one of the four most influential coaches in the conference's history: the other three coaches were Jarvis, Rick Pitino and Hall of Famer Jim Calhoun. He holds the conference record for most playoff wins (18 with Drexel, 1 with UNH, for a total of 19.)
On December 4, 2010, he won his 300th game when UNH beat Colgate, 65–60, and earned his 400th career win on January 10, 2018 in a 71–67 win over Binghamton.[5]
On March 14, 2023, Herrion was fired after 18 seasons as the head coach of UNH.[6]