Nobutaka Taguchi (????, Taguchi Nobutaka, born June 18, 1951) is a retired Japanese breaststroke swimmer.
He competed in the 100 m and 200 m breaststroke and 4 × 100 m medley relay at the 1968, 1972 and 1976 Olympics and won two medals in 1972, a gold in the 100 m and a bronze in the 200 m events.
His breaststroke gold medal was the first for Japan since 1956.
He won during the five-year era dominated by John Hencken and David Wilkie.
He also earned the bronze medal in the 200 m breaststroke at the 1972 Olympics and in both breaststrokes at the 1975 World Championships.