Carlyle John Dinsmoor (April 10, 1913 – October 12, 1985) was an American racing driver who competed under the nom de course Duke Dinsmore.
[1][2][3] Dinsmoor served in the United States Army Air Forces during the Second World War.
Drivers competing at Indianapolis during those years were credited with World Drivers' Championship participation, and were eligible to score WDC points alongside those which they may have scored towards the AAA/USAC National Championship.
Dinsmoor participated in four World Drivers' Championship races at Indianapolis.
Dinsmoor drove ten laps of the 177 completed by Ward (138), Linden (29) and Dinsmore.