Okudaira Tadamasa (奥平 忠政, 1580 – August 7, 1614) was a Japanese daimyo of the early Edo period. He was the son of Tokugawa Ieyasu's son-in-law Okudaira Nobumasa. Due to this family connection, he was allowed to use the Matsudaira surname. He was briefly adopted by Suganuma Sadatoshi; however, this adoption lasted for only five years. Upon Nobumasa's death, Tadamasa succeeded him as lord of the Kanō Domain.
| Preceded by Sasanuma Sadatoshi |
Lord of Yoshii 1602 |
Succeeded by Hotta Masayasu |
| Preceded by Okudaira Nobumasa |
2nd (Okudaira) Lord of Kanō 1602-1614 |
Succeeded by Okudaira Tadataka |