JIM BARNES: HEAD COACH

FIFTH SEASON AT IOWA.

Jim Barnes was selected as the 11th head coach in program history on December 28, 2021.

In his 29 years as a head coach, Barnes has amassed a career record of 498-427 (.539), and nine 20-plus win seasons. He has put together six top-20 recruiting classes and made four appearances in postseason tournaments, including a Sweet 16.

BRIAN YALE: ASSOCIATE HEAD COACH

FIFTH SEASON AT IOWA.

Yale joined the Hawkeye coaching staff in December 2021 after previously serving in the same role and as recruiting coordinator for Barnes at Tulane University.

MAGGIE JOHNSON: ASSISTANT COACH

THIRD SEASON AT IOWA.

Maggie Johnson joined Iowa’s staff as an assistant coach on February 27, 2024.

Johnson comes to Iowa City after serving as head coach for four seasons at Jacksonville University. Prior to her role in Jacksonville, Johnson was an assistant coach and recruiting coordinator at Ohio University. In her time at Ohio, Johnson brought in five nationally recognized recruiting classes. She coached several All-MAC Team honorees, including the 2019 Player of the Year, 2019 Defensive Player of the Year, 2017 Freshman of the Year, and the 2017 and 2019 Setters of the Year.

MACKENZIE MARTIN: ASSISTANT COACH & DIRECTOR OF VIDEO ANALYTICS

FIRST SEASON AT IOWA.

Mackenzie Martin joined the Iowa Volleyball coaching staff as an assistant coach and video coordinator on March 23, 2026.

Martin joins the staff after spending one season as an assistant coach at Liberty. The Flames finished 20-10 in 2025. Martin was involved in preparing game plans and scouting reports, while coordinating video setup and uploads to statistic software platforms. She additionally served as the program’s recruiting coordinator.

Martin was an outside hitter that began her career playing for Coach Barnes at Tulane in 2020. After spending three years at Tulane, she transferred to and finished her career at The Citadel. Martin holds single-match program records for digs at both schools. In 2023, Martin helped The Citadel win the SoCon regular season title with a 27-4 record.

“Mackenzie is a tremendous leader on and off the court,” Barnes said. “She will do a terrific job mentoring our players and will be great in recruiting. Mackenzie has always made those around her better because of her connective personality and work ethic. Along with the assistant role, she will coordinate our video and analytics.”

Martin holds her BS in Psychology from Tulane and an MA in Social Science from The Citadel.

OLIVIA LARSEN: DIRECTOR OF OPERATIONS

SECOND SEASON AT IOWA.

Olivia Larsen was hired as the Director of Volleyball Operations on July 31, 2025.

Larsen returns after earning her BA in Elementary Education from the University of Iowa in 2024. She served as a student manager with the program from 2021-2023. Additionally, she was tabbed as interim director of volleyball operations during the 2021 season. In that role, Larsen created weekly itineraries for the staff and student-athletes, arranged all aspects of team and staff travel and served as the primary contact between the program, support staff and departmental staff.

Prior to her return to the University of Iowa, Larsen was a fourth grade teacher, head volleyball coach and co-head softball coach at Sidney High School in Iowa.