Douglas (Duke) Warren, (May 28, 1922 – August 27, 2011) was a Canadian air force pilot and commander. He shared the nickname "Duke" with his identical twin brother, Bruce (Duke) Warren, who died in 1951. Douglas was known for participating as a pilot in the Dieppe Raid in World War II, and won the Distinguished Flying Cross in 1945. Doug's memoirs, titled "Gemini Flight" chronicled his and his brother's flying experiences.