|Full name||John Thomas William Haines|
|Date of birth||24 April 1920|
|Place of birth||Evesham, England|
|Date of death||13 March 1987(aged 66)|
|Place of death||Worcester, England|
|Height||5 ft 9 in (1.75 m)|
|Playing position||Inside forward|
|→ Wrexham (war guest)|
|→ Doncaster Rovers (war guest)|
|→ Notts County (war guest)|
|→ Bradford Park Avenue (war guest)|
|→ Lincoln City (war guest)|
|1948–1950||West Bromwich Albion||59||(23)|
|1950–1954||Bradford Park Avenue||136||(34)|
|* Senior club appearances and goals counted for the domestic league only.
John Thomas William "Jack" Haines (24 April 1920 – 13 March 1987) was an English professional footballer who played as an inside forward. During his playing career, Haines made over 300 appearances in the Football League, and earned one cap for the English national side in 1948.
Born in Evesham, Haines moved from Cheltenham Town to Liverpool in 1937. He never made a league appearance for Liverpool, and his playing career was interrupted in 1939 by World War II. When play resumed in 1946, Haines moved to Swansea Town, and later played for Leicester City, West Bromwich Albion, Bradford Park Avenue, Rochdale and Chester, before playing non-league football with Wellington United, Kidderminster Harriers and Evesham Town.