Kasaidono (1233? - October 16, 1317?) was a female member of the Hojo clan who lived during the middle years of the Kamakura period.
葛西殿（かさいどの、天福(日本)元年（1233年）?-文保4年（1317年）10月16日(旧暦)?）は、鎌倉時代中期の北条氏一門の女性。