William Meikleham LLD (1771–1846) was Regius Professor of Astronomy at the University of Glasgow from 1799 to 1803. He resigned the Chair of Astronomy to become Professor of Natural Philosophy (Physics) in 1803, a position he held until his death in 1846. Meikleham's first post was Rector of Ayr Academy in 1792. In 1794 he was employed as assistant to the Professor of Natural Philosophy at Glasgow. He conducted his duties so successfully that he continued to take classes after the incumbent Professor's death and during the tenure of his successor.