European
* European Cup Winners' Cup Winners: 1964-65, Runners Up: 1975-76
* UEFA Intertoto Cup Winners: 1999-2000
Domestic
* FA Cup Winners: 1964, 1975, 1980, Runners Up: 1923, 2006
* Division Two Champions: 1957-1958, 1980-81;
* Charity Shield: 1964 (shared)
* Football League Championship Play-Off Winners: 2004-05
Youth
* FA Youth Cup Winners: 1963, 1981, 1999;
* South-East Counties Champions: 1984-85, 1995-96, 1997-98
* FA Premier Youth Academy Under-19 Champions: 1998-99, 1999-2000
War years
* Football League War Cup Winners: 1940
As Thames Ironworks F.C.
* Southern League Division Two Champions: 1898-99
* London League Champions: 1897-98
* West Ham Charity Cup Winners: 1895-96