| Tomasso I | |
|---|---|
| Marchese di Saluzzo | |
 | |
| Reign | 1244–1296 |
| Predecessor | Manfredo III |
| Successor | Manfredo IV |
| Born | 1239 |
| Died | 1296 |
| Spouse | Luigia di Ceva |
| Issue | Manfredo IV Alice FitzAlan, Countess of Arundel |
| House | House of Aleramici |
| Father | Manfredo III |
| Mother | Beatrice of Savoy |
Thomas I (1239–1296) was the fourth Marquess of Saluzzo from 1244 to his death. He was the son of Manfred III and Beatrice of Savoy.[1] He succeeded his father Manfred III. He was also the grandson of Amadeus IV, Count of Savoy.[1]
Under the reign of Thomas, Saluzzo blossomed, achieving a greatness which had eluded his ancestors. He crafted a state the borders of which remained unchanged for over two centuries. He extended the march to include Carmagnola. He was often at odds with Asti and he was a prime enemy of Charles of Anjou and his Italian pretensions. During his tenure, he made Saluzzo a free city, giving it a podestà to govern in his name. He defended his castles and roccaforti (strongholds) vigorously and built many new ones in the cities.
He married Luisa of Ceva. They had: