William Dawson (1852 – 27 July 1923) was a 19th-century Liberal Party Member of Parliament in Dunedin, Otago, New Zealand.
Dawson was born in Aberdeen, Scotland in January 1852. He followed his father into the profession as a brewer.
He was first elected to Dunedin City Council in 1885. Two years later, he was elected Mayor of Dunedin for one term. In 1892, he was again elected onto the city council.
He represented the Dunedin Suburbs electorate in Parliament from 1890 to 1893, when he retired.