Lehto is a Finnish surname. Notable people with the surname include: Arlene Ione Lehto, American politician and businesswoman JJ Lehto, Finnish racing car driver Joni Lehto, Finnish ice hockey player Katja Lehto, Finnish ice hockey player Leevi Lehto, Finnish poet, translator, and programmer Olli Lehto, Finnish mathematician Pekka Lehto, Finnish film director Petteri Lehto, Finnish ice hockey player Rami Lehto, Finnish politician Reino Ragnar Lehto, Finnish politician Seppo Lehto, Finnish activist Finnish-language surnames