Bernard Dowiyogo (February 14, 1946 - March 9, 2003) was a politician from Nauru. He first became an elected member of Nauru's 18-seat parliament in 1973. He served his first term as President in 1976 - 1978 after ousting Hammer DeRoburt.
Over the next 25 years, Dowiyogo served as President several times, for periods as long as six years (1989-1995) and as short as 15 days.
During the 1980s, he sharply criticized France and the United States for atomic weapons testing in the region.
He died at George Washington University Hospital in Washington, D.C heart complications brought on by his struggle with diabetes, a common ailment on Nauru.