William Paterson Templeton (8 November 1876 – 4 July 1938) was a Scottish Unionist Party politician.
A native of Camlachie, Glasgow, Templeton was a wood turner by trade. Before entering Parliament, Templeton was a speaker for the Tariff Reform League and the first organising secretary of Unionist Workers' League.
He contested Ross and Cromarty in 1911 and sat as Member of Parliament for Banffshire from 1924 until 1929. He was unsuccessful in Glasgow Shettleston at a 1930 by-election, and sat for Coatbridge from 1931 until 1935.
In 1934, he, alongside Captain Herbert Moss MP and a former Glasgow town councillor, were convicted of contravening the Lotteries Act in connection to the Modern School of Art Union Cesarewitch draw.