Theodore ("Theo") R. Hancock (November 16, 1923 – July 28, 1989) was a British-born, naturalised American artist, working chiefly in watercolor.

[1][2][3][4] Hancock was born in Buckinghamshire, England to a military father and was educated at Sutton Valence school in the Kent Downs.

After finishing school in 1942, Hancock saw war service with the British Army as a gunner subaltern in Greece and Italy.

[5] He attended Pembroke College, Cambridge in 1944 and in 1948 took up a Fellowship in Art to Brown University in Rhode Island, New York.

[4] Hancock also held the position of Cadet Fine Arts Forum Visiting Artist at the United States Military Academy for the 1979–80 academic year, during which he produced watercolours of West Point scenery.