Kälin or Kaelin is a surname, and may refer to: Alfred Kälin (born 1949), Swiss cross country skier Alois Kälin (born 1939), Swiss Nordic skier Carolyn Kaelin (1961–2015), American surgeon Charles S. Kaelin (1858-1929), American painter Christian Kälin, Swiss lawyer and businessman Karl Kälin (born 1943), Swiss psychologist Kato Kaelin (born 1959), American actor Urs Kälin (born 1966), Swiss alpine skier Walter Kälin (born 1951), Swiss humanitarian and lawyer See also Kalin (disambiguation)