Bannwart is a German surname of Swiss origin. Notable people with the surname include:
Alexander Bannwart (1880–1959), Swiss-American businessman Roman Bannwart (1919–2010), Swiss Roman Catholic theologian, priest, and musician Stéphanie Bannwart (born 1991), Swiss volleyball player Walter Bannwart (1927-20??), Swiss footballer
See also Alfred Bannwarth (1903–1970), German neurologist