William Alder Strange (1813 – 1874) was a headmaster and author.
The son of William Strange of Jersey and Abingdon, a wine merchant, William Alder Strange was educated at Christ's Hospital, London, where he was Senior Grecian, Abingdon School, and Pembroke College, Oxford, where he held a college scholarship. He was awarded the first Boden scholarship in Sanscrit at Oxford in 1833.
Strange was appointed as a master at the Liverpool Royal Institution in 1833, then served as headmaster of Abingdon School from 1840 to 1868. After retiring from Abingdon, he was vicar of Bishop Middleham in County Durham from 1868 to 1874.
He published Cards on Logic, a series of his Sermons and was also a contributor to The Christian Annotator.