Dennis Leech (born 6 April 1943 in Sidmouth) is a British retired auto racing driver. Most of his racing career was spent driving saloon cars, mainly as a privateer in the British Touring Car Championship. He also entered selected rounds of the British Formula One Championship. His most competitive years in the BTCC came in the 1980s, where he was often a front runner in his Class A 3.5 litre Rover Vitesse. In 1987 he finished as runner-up in his class, finishing sixth overall in his ageing Rover. His final year in the BTCC came in 1992, entering his own-built Ford Sierra.