Thomas II (c. 1199, Montmélian – 7 February 1259) was the Lord of Piedmont from 1233 to his death, Count of Flanders jure uxoris from 1237 to 1244, and regent of the County of Savoy from 1253 to his death, while his nephew Boniface was fighting abroad. He was the son of Thomas I of Savoy and Margaret of Geneva.