The Arthurian League is an English association football league for clubs comprising old boys of public schools.

It takes its name – via the Arthur Dunn Cup in which all founder members competed – from Old Etonian and England international Arthur Dunn.

Most first teams contest the Arthur Dunn Cup.

Some enter cups run by – or affiliated to – the Amateur Football Alliance or other Greater London associations.

In addition, the League runs two open aged knock-out cups and two veterans cups as follows: The league's top division was known as the Senior Division until 1975, and Division One until 1981.