William Donald McIntyre (2 January 1869 – 4 May 1902) was an Australian politician.
He was born at Tinonee to Presbyterian minister Allan McIntyre. He attended Sydney Grammar School and then the University of Sydney, where he received a Bachelor of Arts in 1890. He was called to the bar in 1891, practising in Sydney and in north-western New South Wales. In 1901 he was elected to the New South Wales Legislative Assembly as the Progressive member for Inverell, but he died in Sydney in 1902.