| Nobuyoshi Sadanaga | |
| Nationality: | Japanese |
| Sport: | Long-distance running |
| Event: | Marathon |
| Birth Date: | 7 February 1929 |
| Birth Place: | Yamaguchi, Japan |
| Death Place: | Yamaguchi, Japan |
was a Japanese long-distance runner. He competed in the marathon at the 1960 Summer Olympics.[1]