William Cosmo Gordon Lang, 1st Baron Lang of Lambeth, GCVO, PC was a Scottish Anglican prelate who served as Archbishop of York and Archbishop of Canterbury. His elevation to Archbishop of York, within 18 years of his ordination, was the most rapid in modern Church of England history. As Archbishop of Canterbury during the abdication crisis of 1936, he took a strong moral stance, his comments in a subsequent broadcast being widely condemned as uncharitable towards the departed king.
The son of a Scots Presbyterian minister, Lang abandoned the prospect of a legal and political career to train for the Anglican priesthood. Beginning in 1890, his early ministry was served in slum parishes in Leeds and Portsmouth, except for brief service as Vicar of the University Church of St Mary the Virgin in Oxford. In 1901 he was appointed suffragan Bishop of Stepney in London, where he continued his work among the poor. He also served as a canon of St Paul's Cathedral, London.
In 1908 Lang was nominated as Archbishop of York, despite his relatively junior status as a suffragan rather than a diocesan bishop.