William Michael Daley (1870 – 15 July 1944) was an Australian politician.
He was born in Sydney to master stevedore Michael Daley and Catherine Ferguson.
He attended Fort Street Public School and Marist Brothers College before studying at the University of Sydney.
In 1901 he was elected to the New South Wales Legislative Assembly as the Labor member for Sydney-Gipps; he transferred to Darling Harbour in 1904.
He had married Daisy Emily Ives on 23 November 1903; they had two children.