Matilda of Carinthia or Mathilde of Sponheim (died 13 December 1160 or 1161) was the daughter of Engelbert, Duke of Carinthia and his wife Uta of Passau. She married Theobald II, Count of Champagne in 1123. She was the mother of Adèle of Champagne, Queen of France and thus the maternal grandmother of Philip II of France.