Sir William Younger, 1st Baronet, of Auchen Castle

Sir William Younger, 1st Baronet (28 June 1862 – 28 July 1937) was a Scottish politician who served as a member of parliament (MP) for a total of 11 years between 1895 and 1910.

Family Younger was the son of William Younger, of Auchen Castle, Moffat, and his wife Margaret (née Brown), from Sydney, Australia. He was educated at Worcester College, Oxford.

Standing as a Conservative Party candidate, he was elected at the 1895 general election as the MP for the Stamford (or Kesteven) division of Lincolnshire in England. He was re-elected in 1900, but indicated by late 1902 that he would retire at the next election, and thus did not contest Stamford again at the 1906 election.

His next electoral contest was as a Liberal Party candidate at the January 1910 general election, when he returned to Scotland to be elected as the MP for Peebles and Selkirk, beating a Liberal Unionist candidate. He stood down from the House of Commons in December 1910 election.

He was made a baronet in July 1911, of Auchen Castle.