Toyotomi Sadako (豊臣 完子,1592 – 1658) was a Japanese noble woman from the Sengoku period and Edo period. She was a daughter of Toyotomi Hidekatsu (Toyotomi Hideyoshi's nephew) and Oeyo (Oichi's daughter, Oda Nobunaga niece). In 1609 she ascended to the status of Kita no Mandokoro. Due to being directly linked to prominent figures of her time, she was inducted into the Junior Third Rank of the Imperial Court (Jusanmi), one of the highest honors that could be conferred by the Emperor of Japan.