- School South Mountain Community College, Redlands Community College, University of Central Oklahoma, Southwestern Oklahoma State University
- High School Hobart (OK) High School
As an undergraduate student, Jonathan Gelnar attended four different colleges. He played baseball at the first two - South Mountain Community College and Redlands Community College. He then transferred to the University of Central Oklahoma before finishing his college career at Southwestern Oklahoma State University in 2012 with a degree in history. In 2015 he also earned a master's degree in educational leadership.
The information regarding Gelnar's high school coaching career is rather sparse (as was his college career), so the following is a best guess. Gelnar coached at Union High School in Tulsa, OK from 2013-2016 and at Reedy High School in Frisco, TX from 2017-2019.
Jonathan is the son of former major leaguer John Gelnar.