John Alexander McCullough

John Alexander McCullough (17 January 1860 – 29 July 1947) was a New Zealand tinsmith, trade unionist and political activist. He was born in Belfast, County Antrim, Ireland on 17 January 1860.

The Riccarton electorate was contested by three candidates in the 1922 election. George Witty, the incumbent since the 1902 election, was successful, with Herbert Kyle coming second and McCullough coming third. The First Labour Government appointed McCullough to the New Zealand Legislative Council on 9 March 1936. At the end of his seven-year term, he was reappointed on 9 March 1943. He remained a member until his death on 29 July 1947.