Mark Butler completed his fourth season as a member of the Big Red coaching staff in 2018, once again assisting with the offensive line. Butler came to Denison in 2015 with over 30 years of coaching experience at the high school level.
The 2018 season was a breakthrough campaign for the Big Red. After finishing the regular season with an 8-2 record, Denison captured a share of its first North Coast Athletic Conference championship since 1986. Denison earned the conference's automatic bid to the NCAA Division III Championship, marking the program's first playoff appearance in 33 years. The Big Red totaled 2,662 yards rushing led by first-team All-NCAC performers Alex Minton and Canaan Gebele. Minton rushed for a career-high 1,368 yards and 12 touchdowns while Gebele added 612 yards and 14 TDs on the ground. Denison's offensive line was honored as the D3football.com Team of the Week after their performance against 11th ranked Wittenberg. Tackles George Carson and Frank Zoltan were named to the first-team all-conference squad.
A 1979 graduate of Newark High School, Butler played one year of college football at The University of Toledo in 1980. From 1980 through 2013 Butler served as an assistant football coach at all levels of the Newark football program, including 11 seasons as a varsity assistant. In 2007, he was the Wildcats defensive coordinator.
Butler lives in Newark with his wife, Shelly and their two daughters, Katy and Brittany. He was an employee of the Newark Water Department for over 30 years, retiring in 2018.