ton: see English units of measurement.

Ton Duc Thang, 1888-1980, Vietnamese politician. He was an early supporter of Ho Chi Minh and was imprisoned (1929-45) by the French colonial regime. After Vietnamese independence, he rose quickly in the North Vietnamese Communist party. He was vice president (1960-69) and became president of North Vietnam, a largely ceremonial position, upon Ho's death in 1969. After 1976, Ton was president of the newly reunited Socialist Republic of Vietnam.

(born July 1, 1961, Birmingham, Ala., U.S.) U.S. track-and-field athlete. He qualified for the 1980 Olympics but did not participate, because of the U.S. boycott of the Moscow games. At the 1984 Olympics he won the 100-m and 200-m races, the long jump, and the 4 × 100-m relay. At the 1988 Olympics he won the long jump (becoming the first athlete ever to win that event consecutively) and the 100-m race and received a silver medal in the 200-m. In 1992 he again won the long jump and anchored the winning U.S. 4 × 100-m relay team, and in 1996 he astounded observers by winning a fourth consecutive long-jump h1.

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