Thomas James Stanislaus Harbison (8 November 1864 – 22 November 1930) was an Irish nationalist politician. He was born in Cookstown, County Tyrone, to John Harbison, a general merchant, and Isabella Daly. Harbison studied at St Malachy's College in Belfast. He became active in the Irish Parliamentary Party, acting from 1906 until 1910 as the election agent for William Redmond and Tom Kettle. In 1911, he was elected to Tyrone County Council.