Maud of Savoy (1125–1158), also known as Mafalda, Mahaut or Matilda (in Portuguese always as Mafalda), was Queen consort of Portugal through her marriage to King Afonso I of Portugal (of the House of Burgundy; first king of Portugal) in 1146. She was the second or third daughter of Amadeus III of Savoy, Count of Savoy and Maurienne, and Mahaut of Albon (the sister of Guigues IV, Comte d'Albon, "le Dauphin").

Afonso's and Maud descendants
• Henrique (died 1147).
• Mafalda, Princess of Portugal (1148-c.1160).
• Urraca, princess of Portugal (1151–1188), married to King Ferdinand II of León.
• Sancho I, King of Portugal (1154–1212), married to Dulce Berenguer of Barcelona, Princess of Aragon (daughter of Ramon Berenguer IV, Count of Barcelona and Queen Petronila of Aragon).
• Teresa, Princess of Portugal (1157–1218), married to Philip I of Flanders and next to Eudes III of Burgundy.
• João (?-?).
• Sancha (?-?).