|Number of teams||30|
|Level on pyramid||5–7|
|Promotion to||West Wales Premier League|
|Current champions||Rockspur Fords |
|Website||Swansea Senior Football League|
The Swansea Senior Association Football League or Swansea Senior League, is a league competition featuring non-professional association football clubs in the area of Swansea, south Wales. The league consists of seven divisions, three for "first teams" and four for "reserves" and lower teams. The top division, Division One is just below West Wales Premier League, and therefore sits at level 5 of the Welsh football pyramid.
Formed in 1901 as the Swansea Junior League, the first organised league in the Swansea area launched a Senior League in 1903–04, followed in 1904–05 by a name change to the Swansea & District League. The league was suspended during World War I. During the 1921–22 and 1922–23 seasons, the league expanded to include a Gower Division and a Neath Division.
At the outbreak of World War II in September 1939 all local leagues in Swansea suspended football, but in October both the Swansea & District League and a second league, the Swansea Gwalia League approved a merger for the duration of the war years as the Swansea Gwalia Combination with the league operating two senior divisions. In May 1946 the leagues agreed a permanent merger, with the league to be known as the Swansea District Gwalia League. In the 1947–48, the league changed its name to the current league title of the Swansea Senior Association Football League.
The following clubs are competing in the Swansea Senior Football League during the 2021–22 season.
The first league cup competition was held in 1908–09 with Mond Nickel Works being winners. They were successful in all the pre-World War competitions apart from the 1910–11 season when they were knocked out at the semi-final stage by Swansea United. A partial list of the winners of the Senior Cup competition can be found below.
Ragged School have won the cup 14 times.