Klaas Ysbrand "Jimmy" Twisk (13 July 1930 – 4 March 1999) was a Dutch racing driver. He competed in two Formula One non-championship races, the 1959 Silver City Trophy and the 1961 London Trophy, driving a Cooper T51. His best start position was 14th place, and his best result was 16th place.

He also drove in Formula Two and Formula Junior.F2 Register In September 1960 he won a Formula Two race at Rufforth Circuit.Rétrospective 1960 (French)

Non-championship Formula One results (key) Year Entrant Chassis Engine 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 1959 Tulip Stable Cooper T51 Climax Straight-4 GLV AIN INT OUL SIL16 1961 Tulip Stable Cooper T51 Climax Straight-4 LOM GLV PAU BRX VIE AIN SYR NAP LONRet SIL SOL KAN DAN MOD FLG OUL LEW VAL RAN NAT RSA

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