| Honorific-Prefix: | The Honourable |
| Sir Harold Young | |
| Honorific-Suffix: | KCMG |
| President of the Senate | |
| Term Start: | 18 August 1981 |
| Term End: | 4 February 1983 |
| Predecessor: | Sir Condor Laucke |
| Successor: | Doug McClelland |
| Title1: | Senator for South Australia |
| Term Start1: | 1 July 1968 |
| Term End1: | 4 February 1983 |
| Birth Date: | 1923 6, df=yes |
| Birth Place: | Port Broughton, South Australia |
| Death Place: | Glenunga, South Australia |
| Party: | Liberal |
Sir Harold William Young KCMG (30 June 1923 – 21 November 2006) was an Australian Liberal Party politician who represented South Australia in the Senate from 1968 to 1983, acting as President of the Senate from 1981 to 1983.
Harold Young was born in Port Broughton, South Australia on 30 June 1923 and educated at Prince Alfred College in Adelaide. Prior to entering Parliament, he was a wheat farmer and grazier and was involved with various industry bodies, including acting as vice-president of the South Australian division of the Farmers and Graziers Association.[1]
Young was elected to represent South Australia in the 1967 Senate election, his term as Senator commencing on 1 July 1968, and re-elected in 1974, 1975 and 1977.[2]
From 18 August 1981 Young served as President of the Senate.[3] He lost his own seat in the 1983 double dissolution election, the first sitting Australian Senate President to do so.
He was appointed a Knight Commander of the Order of St Michael and St George (KCMG) in the New Year's Day Honours of 1983, "for services to the Parliament of Australia".[4]
Sir Harold died on 21 November 2006 and his funeral was held in Norwood on 27 November. He was survived by his wife Lady (Margaret) Young and their four children, Sue, Scott, Andrea and Rob.