Nandor Wagner (Hungarian: Wagner Nándor, 7 October 1922 – 15 November 1997, Mooka (Mouka, Moka) (Japanese: ??), nearby Mashiko, Tochigi) was a Hungarian artist and sculptor.
He was the son of a dentist, born in Oradea (Hungarian: Nagyvárad), now Romania.
Wagner studied at Budapest Art Academy before and after World War II.
He had three art periods as living in Hungary (1945–56), Sweden (1956–71) and Japan (1972–97) respectively.
He became well known for his novel cast stainless steel sculptures made in Sweden and Japan.
He and his Japanese wife Chiyo Wagner established the TAO Research Institute of World Culture and Development, which continues to support education of young talented artists and promotion of the arts in Mashiko.
They also initiated the establishment of Academia Humana Foundation in Hungary, which has been operating since 1999.
He died in Moka near his studio on 15 November 1997.
The place for his grave was selected and prepared by him in the garden of his Mashiko studio.