Michael Brian Morrison (born 3 March 1988) is an English professional footballer who plays as a centre back for Cambridge United. Morrison began his senior career in the Conference National with Cambridge United. After three years as a first-team player, he moved on to Leicester City, contributing to their promotion to the Championship in 2009. He spent the second half of the 2010–11 season with Sheffield Wednesday of League One before moving to another League One club, Charlton Athletic. He helped Charlton gain promotion to the Championship in his first season, was appointed vice-captain, and played regularly until 2014, when he joined another Championship club, Birmingham City, initially on loan. While a Cambridge United player, he represented England at semi-professional level.