Captain John M. Johnson was born and raised in Athens, Georgia. He attended Clarke County School District before graduating from Clarke Central High School. In his youth, he was a team player and enjoyed playing sports, especially football.

John began his career at the Clarke County Sheriff’s Office in 2006. His first assignment was at the Clarke County Jail, where he worked housing blocks units, medical, intake/release, and other various positions.

In 2009 John progressed in rank as a Corporal and was assigned to the court field section. While assigned to courts, he worked prisoner transport and serving civil papers. In 2011 he was assigned to Superior Court. There he worked on various high-profile cases, including a capital murder trial in 2014.

In 2016 he took his knowledge, community relationship, training, and experience to The District Attorney Office Western Judicial Circuit, where he worked as an Investigator. During this time, he decided to further his education to pursue a degree in Criminal Technology. John has received training from Athens-Clarke County Organization and Development Training in Stepping up to Supervision, including GBI, Homeland Security, and FBI training. In addition to working at the Clarke County Sheriff’s office, he's also a member of the Georgia Gang

Investigators Association (GGIA) and The Georgia Sheriff's Association. In his free time, John enjoys spending time with his family and watching his favorite sport, football.