Ketterer is a surname, and may refer to:
Emil Ketterer (1883–1959), German track and field athlete
Eugène Ketterer (1831–1870), French composer and pianist
Franz Ketterer (1676–1749), German clockmaker
Markus Ketterer (born 1967), Finnish ice hockey player
Reinhard E. Ketterer (born 1948), German figure skater
Sepp Ketterer (1899–1991), German Austrian cinematographer
Theodor Ketterer (1815–1884), German clockmaker
