| Katsuren Seiyū | |
| Native Name: | 勝連 盛祐 |
| Native Name Lang: | ja |
| Office: | sanshikan of Ryukyu |
| Term Start: | 1716 |
| Term End: | 1719 |
| Predecessor: | Tajima Chōyū |
| Successor: | Ie Chōjo |
| Birth Date: | ? |
| Death Date: | 17 July 1719 |
| Blank1: | Childhood name |
| Blank2: | Chinese name |
| Data2: | Mō Ōhō (毛 応鳳) |
| Blank3: | Rank |
| Data3: | Ueekata |
also known by and his Chinese style name, was a bureaucrat of Ryukyu Kingdom.
King Shō Kei dispatched a gratitude envoy for his accession to Edo, Japan in 1714. Prince Kin Chōyū (Japanese: 金武 朝祐, also known by and Shō Eikyō Japanese: 尚 永恭) and he was appointed as and respectively. They sailed back in the next year.[1]
He served as a member of Sanshikan from 1716 to 1719.[2]