Kelly Scott Poppinga (born January 31, 1982 in Evanston, Wyoming) is an American football linebackers coach for the University of Virginia. Poppinga was an American football linebacker. He was signed by the Miami Dolphins as an undrafted free agent in 2008. He played college football at Utah State & Brigham Young universities. Poppinga was previously a member of the St. Louis Rams and Arizona Cardinals. He is the younger brother of NFL linebacker Brady Poppinga. In December 2015, Poppinga was hired by Bronco Mendenhall to follow him to the University of Virginia as outside linebackers coach after serving in the same role at BYU under Mendenhall.