Juha Iisakki Mieto (born 20 November 1949) is a Finnish former cross-country skier, who was born in Kurikka. He competed in the 1972, 1976, 1980 and 1984 Olympics and won five medals, including a gold medal in the 4 × 10 km relay in 1976. He also placed fourth three times, losing the 15 km bronze medal in 1972 by 0.06 seconds. He finished second in this event in 1980 in the closest-ever margin of victory in Olympic cross-country skiing, 0.01 seconds, which led the International Ski Federation (FIS) to round all of their times to the nearest 1/10 second in future competitions. Mieto was selected as the Finnish flag bearer at the 1972 Winter Olympics.