Timothy James DeRuyter (/dəˈruːtər/ də-ROO-tər; born January 3, 1963) is an American football coach and former player who is the former defensive coordinator at Texas Tech University.

[1] A native of Long Beach, California, DeRuyter attended St. John Bosco High School in Bellflower and graduated in 1981.

[5][6][7] DeRuyter became the head coach of the Fresno State Bulldogs beginning the 2012 season.

During the 2012 season, the Bulldogs team included standouts Derek Carr, Phillip Thomas, and Davante Adams.

He was fired by Fresno State on October 23, 2016, after starting the season 1–7 and 4–16 since playing in the Mountain West championship game in 2014.

[11] The 2019 Cal defense featured All-American Evan Weaver, who led the nation in tackles.

[9] During his tenure at Cal, DeRuyter was the primary defensive coordinator from 2017 to 2019, but shared the responsibility with Peter Sirmon in 2020.