John Lowdermilk (born April 17, 1992) is a former American football safety.

He played college football at Iowa.

On May 2, 2015, Lowdermilk was signed as an undrafted free agent by the San Diego Chargers.

On December 1, 2015, he was signed to the Minnesota Vikings' practice squad.

This biographical article relating to an American football defensive back born in the 1990s is a stub.