Owen Frederick Bieber (/ˈbiːbər/; December 28, 1929 – February 17, 2020) was an American labor union activist. He was president of the United Auto Workers (UAW) from 1983 to 1995. Born in Michigan, Bieber joined the McInerney Spring and Wire Company, an automotive parts supplier in Grand Rapids, after finishing high school. His father was also employed at the company, and had co-founded a UAW local there. Bieber himself became active within the local, rising from shop steward to its president between 1949 and 1956. In 1961 he became a part-time union organizer for the UAW's international union and retired as president of the local a year later, to work full-time for the international UAW. In 1980 he was elected as the head of the UAW's General Motors Department.