Adam Barrett, English footballer
Adam Nicholas Barrett (born 29 November 1979) is an English former professional footballer who played as a central defender. During his career, which lasted from 1998 to 2017, he made 647 appearances in the Football League, including 308 for Southend United. He is currently a first team coach at Millwall.

Born in Dagenham, Barrett began his career with Leyton Orient, but failed to make an appearance for them and moved on to sign for Plymouth Argyle, spending the 1999–2000 season with them. In 2000, he moved to Mansfield Town and then spent two years at Bristol Rovers before joining Southend United in 2004. He helped Southend from League Two to the Championship during a six-year stay at Roots Hall, and played over 250 times for the Club before signing for Crystal Palace in 2010. He would go on to play for Leyton Orient (loan), AFC Bournemouth, Gillingham and AFC Wimbledon. In January 2015, he re-joined Southend United.