Hawthorne Charles Gray (February 16, 1889 – November 4, 1927) was a captain in the United States Army Air Corps.
On November 4, 1927, he succeeded in setting a new altitude record in a silk, rubberized, and aluminum-coated balloon launched from Scott Field near Belleville, Illinois, reaching 42,470 ft (12.94 km), but died during his descent after his oxygen supply became depleted.