Thomas Anthony "T. A." Denny (2 April 1818 – 25 December 1909) was an Irish bacon merchant, a self-described "pork philanthropist". Although not a member of the Salvation Army, he supported it financially. His philanthropic activities also included support for education. In April 1868, he married Mary Jane Noel (1829-1887), daughter of Baptist Wriothesley Noel. In 1893, he married the evangelist Elizabeth Hope, who was 24 years his junior.
Denny was one of a small group of wealthy benefactors who sustained the Salvation Army in its early years. He attended meetings called in 1877 by Samuel Morley, another benefactor, to discuss differences with William Booth, after which he continued to provide financial support despite continuing to disagree with Booth about doctrine and methods. His support included, in 1881, paying the first year's rent on the organisation's headquarters at 101 Queen Victoria Street in London and supporting the establishment of the Army in France. In 1882 he contributed to the repayment of debts incurred for the building of barracks.