| Born | 1 December 1948 |
|---|---|
| Died | 22 June 1999 (aged 50) |
| Formula One World Championship career | |
| Nationality |
|
| Active years | 1975 |
| Teams | non-works Lotus |
| Entries | 1 |
| Championships | 0 |
| Wins | 0 |
| Podiums | 0 |
| Career points | 0 |
| Pole positions | 0 |
| Fastest laps | 0 |
| First entry | 1975 South African Grand Prix |
| Last entry | 1975 South African Grand Prix |
Percival Guy Tunmer (1 December 1948 in Ficksburg – 22 June 1999 in Sandton, Johannesburg) was a racing driver from South Africa. He participated in one Formula One World Championship Grand Prix, his home race in 1975, driving a Lotus 72 for a local team, Team Gunston. He finished 11th, scoring no championship points. He later found success in Formula Atlantic.
Guy Tunmer was killed in a motorcycle accident in his native South Africa in 1999.
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