Arthur Llewelyn Davies (20 February 1863 – 19 April 1907) was an English barrister of Welsh origin, but is best known as the father of the boys who were the inspiration for the stories of Peter Pan by J. M. Barrie.

Born 20 February 1863, Davies was the second son of Mary Crompton and John Llewelyn Davies, vicar of Kirkby Lonsdale, a fellow of Trinity College, Cambridge, an early alpinist who was the first ascendant of the third highest mountain in the Alps, and an outspoken foe of poverty and inequality active in Christian socialist groups.

Barrie, whom they met during outings in Kensington Gardens with their nurse Mary Hodgson and their infant brother Peter.

Barrie, who had become wealthy from his books and plays, paid for his medical care, and became a regular companion at his bedside, especially in his final months.

He did not appear in the 2004 film Finding Neverland, nor the 2015 Broadway musical based on it, about Sylvia and Barrie's relationship and the writing of Peter Pan.