Commodore Byron McCandless (September 5, 1881 – May 30, 1967) was a longtime U.S. Navy officer who was awarded the Navy Cross during World War I and the Legion of Merit during World War II. He was also prominent in the field of vexillology (the study of flags), and helped design two separate versions of the Flag of the President of the United States. He was the father of Bruce McCandless, also a naval officer, and the grandfather of NASA astronaut Bruce McCandless II.