| John Hempleman | |
| Birth Name: | John Giles Hempleman |
| Birth Date: | 22 April 1933 |
| Gp Active Years: | 1959–1960 |
| Gp Race Starts: | 11 |
| Gp Race Wins: | 0 |
| Gp Podiums: | 1 |
| Gp Total Points: | 26 |
| Gp Poles: | N/A |
| Gp Fastest Laps: | N/A |
| Gp First Race: | 1959 350cc West German Grand Prix |
| Gp Last Race: | 1960 500cc West German Grand Prix |
John Giles Hempleman (22 April 1933 – 19 August 2019) was a Grand Prix motorcycle road racer from New Zealand. He had his best season in 1960 when he won the 250cc and 500cc classes at the East German Grand Prix, a non-championship race, and finished the year in fifth place in the 125cc world championship.[1]