John Lowdermilk (born April 17, 1992) is an American former 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 September 5, 2015, he was waived.
On December 1, 2015, he was signed to the Minnesota Vikings' practice squad. On May 10, 2016, he was waived.