Tomás "Tommy" Joseph Harris (10 April 1908 – 27 January 1964) was a Spanish-speaking MI6 officer who worked with Juan Pujol García, an important double agent for the British during World War II, in what became known as the Garbo deception.
Harris continued his father's successful art dealing business, and was an essentially amateur artist himself.
Harris had an important collection of Spanish prints, especially those of Goya, which was mostly acquired by the British Museum after his death.
The British Museum has 708 objects formerly in his collection, including 22 prints he made himself, and in 1981 published Juliet Wilson Bareau's, Goya's Prints, The Tomás Harris Collection in the British Museum.His only sibling was Enriqueta Harris (1910—2006), an art historian specializing in Spanish art.