James Ostermann Mason (born June 19, 1930) was the United States Assistant Secretary for Health (ASH) from 1989 to 1993 and the Acting Surgeon General of the United States from 1989 to 1990. As the ASH he was also a former four-star admiral in the United States Public Health Service Commissioned Corps. He was also a director of the Centers for Disease Control and Prevention and a general authority of The Church of Jesus Christ of Latter-day Saints (LDS Church).