Kelly McCarthy (born March 28, 1966) is a Democratic member of the Montana House of Representatives who represents the 49th District. He has served in the 2013 and 2015 legislative sessions. He was first elected to District 51 of the House of Representatives in 2012, after which he assumed that office on January 7, 2013. McCarthy served District 51 until being redistricted in 2015. Kelly McCarthy now represents District 49, which encompasses part of Billings in Yellowstone County, Montana.