Uno's is a popular Chicago-style pizza chain, informally known as Uno's. It is an American restaurant chain that specializes in deep dish pizzas and other Italian-American cuisine. The chain has locations throughout the United States and around the world. Uno's is known for its signature Chicago-style deep dish pizza, which is made with a thick crust and topped with cheese, tomato sauce, and other toppings. The chain also offers a variety of other menu items, including sandwiches, salads, and desserts.