Bastardo is a type of red grape used in Portuguese port wine. It is generally considered an inferior port wine grape, especially when compared to such varieties as Touriga National .
In Australia, it is called Cabernet Gros. A variant called Trousseau Gris (also Trousseau) is grown in France, especially in the Chablis (Burgundy) region where it is called the Tressot. It is sparsely known in the southern regions of France.
It is occasionally found in California vineyards, where it is known as the Petite Sirah.