San Uk Tsai (), also called Tam Chuk Hang San Uk Tsai (), is a Hakka walled village in Fanling, North District, New Territories, Hong Kong.
San Uk Tsai is a recognized village under the New Territories Small House Policy.
San Uk Tsai appeared in the 1688 edition of the Gazetteer of Xin'an County. It was therefore probably established before 1688.