
Trevor Blokdyk (30 November 1935 - 13 November 1995) was a South African racing driver who made a single Formula One World Championship appearance. Born in South Africa, Blokdyk competed in the 1963 South African Grand Prix at East London, driving a privately-entered Cooper-Alfa Romeo. He qualified 17th on the grid and finished 11th in the race, completing 82 of the 85 laps. This represented his only World Championship start, though he competed in South African domestic racing throughout the 1960s.
Blokdyk was part of the local South African racing scene that flourished during the 1960s when the South African Grand Prix was part of the World Championship calendar, providing opportunities for local drivers to compete in Formula One events on their home soil. The Cooper-Alfa Romeo he drove was a customer car powered by an Alfa Romeo engine, representing one of the various engine supply arrangements that existed during the early 1960s. While the car was not competitive against the leading works teams, Blokdyk's completion of the race demonstrated his competence and reliability. Beyond his Formula One appearance, Blokdyk raced in South African national championships and various sports car events throughout his career.
He competed against other South African drivers who occasionally participated in Formula One, including Tony Maggs, Doug Serrurier, and others. The South African racing scene of the era provided a training ground for drivers and helped develop local motorsport infrastructure, though few drivers from the country achieved sustained success in international Formula One. Blokdyk continued his involvement in South African motorsport after his racing career ended. He passed away in November 1995 at the age of 59, remembered as part of South Africa's Formula One heritage during the sport's early decades.