West Ham United Football Club is an English football club based in Upton Park, London Borough of Newham, East London. They have played their home matches at the Boleyn Ground stadium since 1904.

The club was founded as Thames Ironworks F.C. in 1895 and was later reformed, in 1900 as West Ham United. They initially competed in the Southern League and Western League before joining the full football league in 1919 and enjoyed their first top flight season in 1923, featuring in the first FA Cup Final to be held at Wembley that year against bolton wanderers. The club have won the FA Cup three times: in 1964, 1975 and 1980. They have also been runners-up twice, in 1923 and 2006.

In 1965, they won the European Cup Winners Cup, and in 1999 they won the Intertoto Cup.

They also won the inaugural Football League War Cup in 1940. The club's best final league position is third place in the 1985–86 (old) First Division.

West Ham currently compete in the Premier League, and finished in 9th position in the 2008–09 season. They have been members of the Premier League for all but three seasons since its creation in 1992, and their highest finish in the Premier League was 5th in 1998–99.