Joseph Hargreaves (1821 – 10 April 1880) was a 19th-century Member of Parliament from Auckland, New Zealand.

Born in Liverpool in 1821,^[1] Hargreaves represented the Suburbs of Auckland electorate in 1860, from 5 April (elected in the electorate's second by-election that year) to 24 July, when he resigned on private grounds.^[2] John Logan Campbell was elected unopposed (in the electorate's third by-election that year) to fill the vacancy.^[3] He died on 10 April 1880.^[4]

Hargreaves was married to a daughter^{[nb 1]} of William Spain, who had been appointed in 1841 as a New Zealand Land Claims Commissioner and had lived in the country until 1845.^[1] His wife died on 2 October 1910, aged 84.^[5]