Jon M. Bramnick (born February 24, 1953) is an American Republican Party politician, who has served in the New Jersey General Assembly since 2003, representing the 21st legislative district. He has served as the Assembly Republican Leader since January 2012. He was appointed to the Assembly in 2003 to fill the unexpired term of the vacancy created upon the selection of Thomas Kean, Jr. to fill an unexpired New Jersey Senate term.