Poirier's Diner is a historic restaurant at 1380 Westminster Street in Providence, Rhode Island. The diner was built in 1947 by Kullman Dining Car Company, and is a typical Art Deco streamlined stainless steel structure. It is one of two surviving Kullman diners in the state.The diner was originally located at 579-581 Atwells Avenue, an industrial area, where it operated for many years.