Emil "Bus" Mosbacher, Jr. (1922 – August 13, 1997) was a two-time America's Cup-winning yachtsman, the founding chairman of Operation Sail, and during the administration of President Richard Nixon.
Mosbacher was born in White Plains, New York. He was the brother of Robert Mosbacher Sr., also a champion yachtsman, and U.S. Secretary of Commerce during the administration of President George Herbert Walker Bush. He was the son of Gertrude (née Schwartz) and Emil Mosbacher, Sr., a wealthy stock trader who divested himself of his holdings just before the Wall Street Crash of 1929 and who, as a member of the Knickerbocker Yacht Club, help formulate specifications for the Interclub class of racing sloops. His family was of German Jewish descent.
"Bus" Mosbacher graduated from The Choate School (now Choate Rosemary Hall) in 1939 and from Dartmouth College in 1943. During World War II Mosbacher served on a Navy minesweeper in the Pacific. In the 1940s and 1950s he oversaw his family's oil, natural gas and real estate business.
Mosbacher is best known for his yacht racing. In 1962, even before his two America's Cup victories, he was described by Sports Illustrated as "the finest helmsman of our time." As a schoolboy sailor he had been Junior Champion of Long Island Sound, and at Dartmouth he led the sailing team to two Intercollegiate Championships (the McMillan Cup 1941 & 42). During the 1950s he won eight consecutive Long Island Sound season championships in the International One-Design Class, and in 1959 he was Southern Ocean Racing Conference (SORC) champion. Mosbacher successfully defended the America's Cup in 1962 at Newport, Rhode Island in the sloop Weatherly, and again in 1967 in the 12-metre class yacht Intrepid. Mosbacher was elected into the inaugural class of the America's Cup Hall of Fame in 1993 and the inaugural class of the U.S. National Sailing Hall of Fame in 2011.