Duke Dinsmore
J. Carlyle "Duke" Dinsmore was an American racecar driver.| Starts | 6 |
| Poles | 0 |
| Front Row | 0 |
| Wins | 0 |
| Top 5 | 0 |
| Top 10 | 1 |
| Retired | 4 |
* Shared drive with Rodger Ward and Andy Linden. Dinsmore drove ten laps of the 177 completed by Ward, Linden and Dinsmore.| Year | Entrant | Chassis | Engine | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | WDC | Points |
| 1950 | Brown Motors | Kurtis Kraft 2000 | Offenhauser L4 | GBR
| MON
| 500
33 | SUI
| BEL
| FRA
| ITA
| | | NC | 0 |
| 1951 | Brown Motors | Schroeder | Offenhauser L4 | SUI
| 500
24 | BEL
| FRA
| GBR
| GER
| ITA
| ESP
| | NC | 0 |
| 1952 | Vulcan Tool | R Miller | R Miller | SUI
| 500
DNQ | BEL
| FRA
| GBR
| GER
| NED
| ITA
| | NC | 0 |
| 1953 | M.A. Walker Electric | Kurtis Kraft | Offenhauser L4 | ARG
| 500
16 * | NED
| BEL
| FRA
| GBR
| GER
| SUI
| ITA
| NC | 0 |
| 1954 | Commercial Motor Freight | Ewing | Offenhauser L4 | ARG
| 500
DNQ | BEL
| FRA
| GBR
| GER
| SUI
| ITA
| ESP
| NC | 0 |
| 1956 | Shannon's | Kurtis Kraft 500A | Offenhauser L4 | ARG
| MON
| 500
17 | BEL
| FRA
| GBR
| GER
| ITA
| | NC | 0 |
