Russell Allen (born May 5, 1986) is an American football player for the Jacksonville Jaguars of the National Football League (NFL). Allen was born in Oceanside, California. He played linebacker for San Diego State University. He was signed as an undrafted free agent by the Jacksonville Jaguars on April 26, 2009. On September 5, 2009, he became one of two undrafted rookies, the other being Julius Williams, to make the Jaguars opening day roster.