Jeff Grimes (born September 23, 1968) is an American football coach, and the offensive coordinator for the Wisconsin Badgers. He was previously the offensive coordinator at the University of Kansas (2024), Baylor University (2021 to 2023) and Brigham Young University (BYU) (2017 to 2020), Louisiana State University's (LSU) offensive line coach and run game coordinator (2014 to 2017), and the offensive line coach at both Virginia Tech (2013) and Auburn University (2009 to 2012). In addition, he was the assistant head coach, run game coordinator and offensive line coach at the University of Colorado (2007 to 2008), BYU's offensive line coach (2004 to 2006), offensive line coach and run game coordinator at Arizona State University (ASU) (2001 to 2003), and offensive line coach at Boise State University (BSU) (2000).

Grimes earned four letters as an offensive tackle for the University of Texas-El Paso (UTEP) Miners from 1987 to 1990. He was coached by Marty Mornhinweg (QB coach), Dave Toub (strength coach), Andy Reid (offensive line coach), and Dirk Koetter (offensive coordinator). Grimes was not drafted into the National Football League (NFL), but had a brief professional career, participating in training camp with both the Los Angeles Raiders and the World League of American Football's San Antonio Riders.

Grimes began coaching in 1993 as a high school coach at Riverside High School in El Paso, Texas. After two years as the offensive coordinator and line coach there, he moved to the college ranks and started working as a graduate assistant under Ken Hatfield at Rice in 1995. He spent the next two seasons in the same position under R. C. Slocum at Texas A&M, while serving under line coach Mike Sherman, before receiving his first full-time college position in 1998 as offensive line coach at Hardin–Simmons, under Jimmie Keeling. The Cowboys were 21-2 during his tenure, averaged 39.4 points per game and reached the national semifinals in 1999.

In 2000, Grimes was hired as the offensive line coach at BSU under his former college football coach, Koetter. Grimes worked alongside Dan Hawkins. In the season at BSU, the offensive line he coached helped the Broncos lead the nation in scoring offense and accumulate 175 rushing yards per game.

In 2001, when Koetter was hired as the head coach at ASU, Grimes followed him to serve as the offensive line coach and run game coordinator. Grimes had great success at ASU, with four of the 2001 seniors drafted into the NFL (just the second time that had been done at any school since the NFL adopted the seven-round draft format in 1993). He helped orchestrate a solid rushing attack, tutoring Loren Wade to break the ASU freshman rushing record while leading the Pac-10 in yards per carry.

In 2004, Grimes was hired as the offensive line coach at BYU, under head coach Gary Crowton. After Crowton resigned following the 2004 season, newly promoted head coach Bronco Mendenhall decided to keep Grimes on his staff. The 2006 BYU linemen Grimes coached blocked for the nation's fourth best offense, averaging over 465 yards per game including 141.9 on the ground, and were a large part of the Cougars winning the Mountain West Conference championship. BYU finished 11–2 and ranked 15th in the Coaches' Poll.

In February 2007, Grimes was hired as the assistant head coach, offensive line coach and run game coordinator at the University of Colorado, under head coach Hawkins. Grimes and Hawkins had previously worked together at BSU and Grimes also served with Colorado offensive coordinator Mark Helfrich at ASU.

In January 2009, Grimes was hired by new head coach Gene Chizik to coach the offensive line at Auburn.