John Alexander McGillivray
 John Alexander McGillivray (January 4 1853 – February 14 1911) was a Canadian lawyer and politician.Born in Pickering Township Canada West McGillivray studied law under George Young Smith in Whitby Lyman English in Oshawa and Jones Brothers & Mackenzie in Toronto. He started practicing law with John Billings in Port Perry and later moved to Uxbridge Ontario. He was elected to the first council of the Town of Uxbridge in 1872 and was mayor in 1890.