Sadahiro
| Gender | Male |
|---|---|
| Origin | |
| Word/name | Japanese |
| Meaning | Different meanings depending on the kanji used |
Sadahiro (written: 定博, 定広 or 貞博) is a masculine Japanese given name. Notable people with the name include:
- Sadahiro Miwa (三輪 定広; born 1941), Japanese weightlifter
- Sadahiro Sunaga (須永 定博; born 1934), Japanese rower
- Takanonami Sadahiro (貴ノ浪 貞博; 1971–2015), Japanese sumo wrestler and coach