Sir William Peck FRSE FRAS (3 January 1862, Castle Douglas, Kirkcudbrightshire – 7 March 1925, Edinburgh) was a Scottish astronomer and scientific instrument maker.
His family moved to Edinburgh in his youth and here he worked in a glue factory in the Gorgie district for Robert Cox.
His proposers were Robert Cox, Sir Arthur Mitchell, Alexander Buchan and the 8th Duke of Argyll.
Among the members of the Golden Dawn, there was Irish poet W B Yeats, actress Florence Farr, Oscar Wilde's wife Cobstance Mary, Bram Stocker and obviously Aleister Crowley.
He is buried in Warriston Cemetery in the upper section, on the north side of the main east-west path.