Thomas Francis Gillespie (December 15, 1838 – August 8, 1893[1]) was an Irish-born merchant and political figure.
He represented Northumberland County in the Legislative Assembly of New Brunswick from 1870 to 1874 and from 1878 to as a Conservative member.
He was born near Mallow in County Cork, the son of John Gillespie and Eliza Sheehan, and was educated at Rathkeale.
Gillespie came to New Brunswick in 1848 and, in 1854, settled in Chatham, where he purchased an iron foundry.
He was a justice of the peace and lieutenant colonel in the local militia.