Donald Macdonell (1862 – 26 October 1911) was a politician, trade unionist and shearer in New South Wales, Australia. Born at Stuart Mill near St Arnaud, Victoria, to Christina née McMaster and Alexander Macdonell, a Scottish-born farmer and shearer. He helped on his father's farm as a child and moved to New South Wales in 1886, being an early member of the Australian Shearers' Union. He played a leading party in the 1891 strike, during which time he had traveled to Queensland. He became secretary of the Shearers' Union's Bourke branch and a member of the Labor Party in 1894, and helped to draft the rules for the new Australian Workers' Union when the shearers' and labourers' unions amalgamated in the same year. He continued as secretary of the AWU's Bourke branch thereafter. He was gener