David Sadler (born 5 February 1946 in Yalding, Kent, England) is an English former footballer.
Sadler started his career with Maidstone United, but signed a professional contract with Manchester United in 1963, helping the club win the 1965 and 1967 First Division Football League championships as well as the 1968 European Cup.
He left United in 1974 after scoring 27 goals for the club to join Preston North End, who were being managed by Sadler's former teammate Bobby Charlton.
He made 121 appearances (including one as substitute) for the Deepdale club and scored four goals before retiring due to injury in 1977, by which time Charlton had resigned as manager.
This biographical article related to association football in England, about a defender born in the 1940s, is a stub.