Bill Callahan was hired by the Titans as offensive line coach in 2024. He arrived in Tennessee with 46 years of coaching experience, including 25 years in the NFL.

Callahan spent a total of six seasons as a head coach with the Oakland Raiders (2002-03) and the University of Nebraska (2004-07), in addition to part of one season as an interim head coach with the Washington Commanders (2019).

During his time in the NFL, Callahan has spent 22 seasons coaching offensive lines and seven years as an offensive coordinator. His teams have gone to the playoffs 11 times, totaling 22 career postseason contests. He has helped his side of the ball finish with the No. 1 ranked rushing offense in 2000 (Raiders) and 2009 (Jets), as well as the top ranked passing offense in 2002 (Raiders). He has served on teams that finished in the top five in the NFL in rushing or passing 13 times. In the process, 14 offensive linemen under his tutelage have been selected to a total of 35 Pro Bowls.

When he joined the Titans, it marked the first time that he and his son, Titans head coach Brian Callahan, were employed by the same organization.

Callahan was recognized by the Professional Football Writers of America (PFWA) as one of two winners of the 2024 Paul "Dr. Z" Zimmerman Award, sharing the honors with Steve Spagnuolo. The award is given annually for lifetime achievement as an assistant coach in the NFL.

Prior to working with the Titans, Bill Callahan spent four years as the offensive line coach for the Cleveland Browns (2020-23). During that span, the Browns qualified for the playoffs twice and ranked third in the NFL with an average of 139.6 rushing yards per game. The team's 4.61-yard rushing average ranked sixth during that period.

In 2023, Browns guard Joel Bitonio was voted to his fourth consecutive Pro Bowl under Callahan's mentorship (his sixth consecutive Pro Bowl overall). Cleveland tied for the league's 10th-best scoring offense with an average of 23.9 points per game despite being the first team since Atlanta, Kansas City and New England during the strike season of 1987 to use five different starting quarterbacks.

In 2022, the Browns recorded the third-highest rushing total in club history with 2,490 yards. Running back Nick Chubb finished third in the NFL with 1,525 rushing yards, and Bitonio and Wyatt Teller were named to the Pro Bowl. Bitonio also garnered AP first-team All-Pro honors for the second consecutive season.

In 2021, Callahan helped the Browns lead the NFL with an average of 5.09 yards per rushing attempt, the highest mark by a Browns team since 1966. The offensive line opened holes for Chubb, who finished second in the league with 1,259 rushing yards. Bitonio and Teller earned Pro Bowl honors, marking the first time a pair of Browns guards made the Pro Bowl in the same season since 1967. In addition, Bitonio was an AP first-team All-Pro honoree and Teller was named to the second team.

During his first season with the Browns, Callahan helped the club finish third in the league in rushing with an average of 148.4 yards per game—the team's best average since 1978. Right tackle Jack Conklin earned first-team AP All-Pro honors, while Bitonio and Teller earned second-team honors. Bitonio was also selected to the Pro Bowl, while first-round left tackle Jedrick Wills Jr. was voted the NFL Pepsi Zero Sugar Rookie of the Week for Week 10, becoming just the fourth offensive lineman to win the award since its inception in 2002 and first since 2013.

Callahan was on Washington's coaching staff from 2015 to 2019, working mostly with the offensive line and serving as interim head coach for the final 11 games in 2019. Guard Brandon Scherff was named to the Pro Bowl in 2019, giving him three such appearances in five seasons with Callahan.

In 2018, Callahan helped to steady a Washington offensive line that lost four of its five Week 1 starters for extended periods of time during the season. The unit aided running back Adrian Peterson in becoming the first Washington running back to rush for 1,000-plus yards in a single season since 2014. Tackle Trent Williams was also selected to his fourth consecutive Pro Bowl under Callahan.

In 2017, injuries forced Washington to use a total of 36 unique groups of offensive linemen (including seven different combinations of six-lineman groupings), as well as eight different starting lineups along the offensive front. In total, Callahan coached 28 different offensive linemen during the 2017 calendar year, including players on the offseason roster and on the practice squad. Among the newcomers Callahan developed were rookies Chase Roullier and Tyler Catalina, the former of whom blossomed from a sixth-round pick into a seven-game starter at center and the latter of whom performed at multiple positions after making the team as a college free agent. Scherff and Williams became the franchise's first offensive line duo to be named to the Pro Bowl in consecutive seasons since Russ Grimm and Joe Jacoby earned four straight selections from 1983 to 1986.

In the team's first two seasons under Callahan, Washington allowed 50 total sacks after allowing 58 sacks in the 2014 season alone. The 2016 squad set single-season team records in yards per game (403.4), yards per play (6.40), net passing yards (4,758), completions (407), passing first downs (226) and 500-yard games (three). Their 23 sacks allowed in 2016 was the fourth-fewest in the NFL and tied for the seventh-fewest for the franchise since 1982. The selections of Scherff and Williams to the Pro Bowl marked the first time the team had multiple offensive linemen earn the honor in the same season since tackle Jim Lachey and guard Mark Schlereth in 1991.

In his first year in Washington, Callahan helped the team capture the NFC East title while recording the largest year-over-year decline in sacks allowed in team history. A year after allowing 58 sacks in 2014, Washington held opponents to 27 sacks in in 2015. The performance of the line as a unit helped garner Pro Bowl honors for Williams and PFWA All-Rookie honors for Scherff.

Prior to his time with Washington, Callahan served as offensive coordinator/offensive line coach for the Dallas Cowboys from 2012 to 2014 and helped guide the franchise to its first NFC East title since 2009 in his final season. In 2014, the Cowboys finished second in the NFL in rushing (147.1 yards per game) with running back DeMarco Murray leading the league in rushing and setting a Dallas franchise record with 1,845 yards. Callahan had two offensive linemen—tackle Tyron Smith and guard Zack Martin—named to the 2014 AP All-Pro team and had another—center Travis Frederick—selected with Smith and Martin to the Pro Bowl.

Callahan served as assistant head coach/offensive line coach of the New York Jets from 2008 to 2011, during which time the Jets offense ranked second in the NFL in rushing yards per game (137.9). Meanwhile, the Jets appeared in consecutive AFC Championship games in 2009 and 2010. In his four seasons with the organization, Callahan coached three offensive linemen to nine total Pro Bowl appearances: four by Nick Mangold, three by D'Brickashaw Ferguson and two by Alan Faneca. Mangold earned AP All-Pro honors in 2009 and 2010.

Prior to his time in New York, Callahan served as head coach at the University of Nebraska from 2004 to 2007. He led the Cornhuskers to a Big 12 Conference Championship Game appearance in 2006 and two bowl invitations in his four seasons.

Callahan spent six seasons with the Oakland Raiders from 1998 to 2003, first serving as offensive coordinator for four years before becoming the 13th head coach in Raiders history in 2002. The 2002 squad set a franchise record for total offense with an NFL-best 6,237 yards and led the NFL in passing yards (4,689) en route to an appearance in Super Bowl XXXVII. He became the fourth rookie head coach in NFL history to earn a Super Bowl berth.

Callahan's first NFL experience was coaching the offensive line with the Philadelphia Eagles from 1995 to 1997. His group helped the Eagles rank second in the NFC in passing, fifth in rushing and third in total offense in 1997.

Prior to joining the Eagles, Callahan accrued 15 seasons of collegiate coaching experience in various capacities at Illinois (1980-86), Northern Arizona (1987-88), Southern Illinois (1989) and Wisconsin (1990-94).

As a student athlete, Callahan started at quarterback for three seasons (1975-77) at Illinois Benedictine (lisle, Ill.), where he earned honorable-mention All-America honors in 1976 and 1977 and graduated with a bachelor's degree in physical education in 1978. In 2004, he was inducted into the Benedictine University Athletics Hall of Fame.

Callahan was born in Chicago and attended Mendel Catholic High School. He is a member of the Chicago Catholic League Hall of Fame as well as the Mendel Catholic High School Hall of Fame.

He and his wife, Valerie, have four children: daughters Cathryn and Jaclyn, and sons Brian and Daniel.

BILL CALLAHAN'S COACHING TIMELINE

2024: Offensive Line – Tennessee Titans
2020-23: Offensive Line – Cleveland Browns
2019: Interim Head Coach (11 Games) – Washington Commanders
2017-19: Assistant Head Coach/Offensive Line – Washington Commanders
2015-16: Offensive Line – Washington Commanders
2012-14: Offensive Coordinator/Offensive Line – Dallas Cowboys
2008-11: Assistant Head Coach/Offensive Line – New York Jets
2004-07: Head Coach – University of Nebraska
2002-03: Head Coach – Oakland Raiders
1999-01: Offensive Coordinator/Offensive Line – Oakland Raiders
1998: Offensive Coordinator/Tight Ends – Oakland Raiders
1995-97: Offensive Line – Philadelphia Eagles
1990-94: Offensive Line – University of Wisconsin
1989: Offensive Coordinator – Southern Illinois University
1987-88: Offensive Line – Northern Arizona University
1986: Quarterbacks – University of Illinois
1984-85: Offensive Line – University of Illinois
1982-83: Special Teams/Tight Ends – University of Illinois
1980-81: Associate Coach – University of Illinois
1979: Assistant Coach – De La Salle (Ill.) High School
1978: Assistant Coach – Oak Lawn (Ill.) High School