Kanezawa Sanetoki (金沢 実時), also called Hōjō Sanetoki (北条 実時, 1224 – November 30, 1276) was the founder of the Kanazawa Bunko (Kanazawa Library).
As his talent was discovered by his uncle Hōjō Yasutoki, Sanetoki was given important posts by four shikken: Yasutoki, Tsunetoki, Tokiyori and Tokimune.
He began his career as the head of Kosamurai-dokoro in 1234 and then became Hikitsukeshu in 1252 and Hyojoshu in 1253.
Due to illness, he resigned from all posts and took a rest at his residence at Kanezawa (modern-day Kanazawa), Yokohama.
He studied under Kiyohara no Noritaka, who came to Kamakura in Prince Munetaka's retinue.