Major William Murray (1865 – 5 March 1923) was a Liberal Unionist and later Unionist Party politician in Scotland. He was elected at 1918 general election as the Member of Parliament (MP) for Dumfriesshire, as a Coalition Unionist, but did not stand again at the 1922 election.
Murray had earlier contested the seat as a Liberal Unionist in both the January 1910 and December 1910 general elections, but lost on both occasions by margins (by margins of 6.6% and 6.4% respectively). He had also stood twice without success in the Dumfries Burghs constituency, at the 1895 and 1900 general elections.