Thomas Leavitt may refer to:
Thomas Leavitt (banker) (1795–1850), president of the Bank of New Brunswick, diplomat, politician and businessman Thomas Leavitt (inventor) (1827–1899), American inventor Thomas Leavitt (settler) (1616–1696), English Puritan and settler of the Province of New Hampshire Thomas Rowell Leavitt (1834–1891), Mormon settler of Leavitt, Alberta, Canada