Trần Thái Tông
An Tư (, ? - ?), was a princess during the Trần Dynasty (1225–1400), the youngest offspring of emperor Trần Thái Tông. The exact year of her birth and death are unknown. The "Đại Việt sử kí toàn thư" (1675) only records that “the servants were ordered to give Princess An Tư to Togon to buy time”.