Nobuyuki Aihara

was a Japanese gymnast. He was the father of Yutaka Aihara, also a gymnast.

Nobuyuki competed at the 1956 Olympics and won a silver medal in floor exercise and a silver medal in the team competition. Four years later he won gold medals in these events.

Aihara took up gymnastic at the age of 15 while studying at the Nippon Sport Science University. He was coached by his future teammate Masao Takemoto. In 1964 he married Toshiko Shirasu-Aihara, a fellow gymnast. Because of an injury he missed the Tokyo Olympics that year, and soon retired to become a gymnastics coach. In 1979 he founded the Aihara Gymnastics Club.