Hazel-Atlas Glass Company was an American glass manufacturing company that was in operation from 1902 to 1964. The company was based in Washington, Pennsylvania, and was known for producing a wide range of glass products, including tableware, kitchenware, and industrial items. The company’s most popular product was a line of depression glass that was produced in a variety of colors and patterns. Hazel-Atlas Glass Company was one of the largest glass manufacturers in the United States during the early 20th century.