Gyoken (year of his birth and death is not clear) was a Buddhist monk cum waka poet in the Muromachi period. He was a younger brother of Sanehisa SHIMIZUDANI. His go (a pen name) was Sansei.
He was a waka poet of Nijo school and he inherited Ninna-ji Temple joko-in as an adopted child of Gyoko. He was appointed in 1465 to kaiko (Deputy Chief) of the office to compile imperial poetic anthology, but due to the Onin War that erupted in 1466 to 1476, he left the capital for Echizen Province and found shelter with Asakura clan.