Münnich is a surname. Notable people with the surname include:
Count Burkhard Christoph von Münnich (1683 – 1767), German nobleman and general in the Russian army Ferenc Münnich (1886–1967), Hungarian politician René Münnich (born 1977), German racing driver and team owner Münnich Motorsport, auto racing team Richard Münnich (1877–1970), German musicologist and music pedagogue