Deane Keller BEM (December 14, 1901 – April 12, 1992) was an American artist, academic, soldier, art restorer, and preservationist.

[6] In total, Keller taught at Yale for forty years, retiring in 1979, and was also professor emeritus of painting at the Paier College of Art.

[7] Captain Keller was primarily responsible for the identification and transportation of artworks in Tuscany, Italy, the center of the Italian Renaissance and a major site of Nazi looting.

[1][8] He worked in Pisa and Florence, where Nazi troops had bombed churches, destroyed or dislocated public art, and seized paintings from museums including the Uffizi.

[8] As they were discovered during the invasion of Italy, Keller repatriated lost works, including Giambologna's statue of Cosimo I de Medici, a fixture of Florence's Piazza della Signoria.

He was the first to enter Pisa liberated from the Nazis on 2 September 1944, with the partisan Pierino Fornaciari, liaison officer, with whom he rescued many art works, in particular in the Camposanto Monumentale.

His remains were apportioned and interred in New Britain, Connecticut and the Camposanto Monumentale in Pisa; that site is identified with an engraved marble slab.