Yasui Santetsu may refer to:
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Yasui Santetsu (Yasui house), go player and head of the
Yasui house between 1612 and 1644
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Shibukawa Shunkai
born as Yasui Santetsu (), later called Motoi Santetsu (), was a Japanese scholar, Go (game), go player and the first official astronomer appointed of the Edo period. He revised the Chinese lunisolar calendar at the shogunate request, drawi ...
(1639–1715), Japanese astronomer and go player originally named Yasui Santetsu
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