Wisut Kasattri (Thai: วิสุทธิกษัตรีย์, Visuddhikṣatrīya) or Borommathewi (บรมเทวี), was a Siamese Queen and Princess during the Ayutthaya period in the 16th century, born Sawatdiratchathida (สวัสดิราชธิดา) to Prince Thianracha (later King Maha Chakkraphat) and Suriyothai.
She was a mother of two kings (Naresuan and Ekathotsarot, and the maternal ancestor of the Sukhothai Dynasty, which ruled Ayutthaya from 1569 to 1629.
He was made Lord of Phitsanulok, soon after helping Maha Chakkraphat to the throne through a palace coup.
In 1566, she took part in the kidnapping of her younger sister Phra Thepkassattri, who was betrothed to King Setthathirath of Lan Xang, in order to thwart an attempted alliance between Ayutthaya and Laos against her husband.
Following the Burmese-Siamese War (1568–1569), her husband ascended the throne with the help of Bayinnaung as King Maha Thammarachathirat or Sanphet I, and together they became the founders of the Sukhothai Dynasty.