Karcher or Kärcher is a surname. Notable people with the surname include:
Alfred Kärcher, German industrialistAlan Karcher (1943–1999), New Jersey politician (father of Ellen Karcher)Carl Karcher (1917–2008), restaurateur, founder of the Carl's Jr. hamburger chainEllen Karcher (born 1964), New Jersey politician, state senator (daughter of Alan Karcher)Ernst Friedrich Kärcher (1789–1855), German educator and philologistJ. Clarence Karcher (1894-1978), geophysicist and inventor of the reflection seismograph and founder of what would become Texas InstrumentsJim Karcher (1914–1997), American football playerKarl-Ehrhart Karcher (1918–1973), German World War II Schnellboot commanderKen Karcher (born 1963), American football playerMark Karcher (born 1978), American basketball playerMargaret Karcher (1915–2006), American restaurateur