Klos or Kłos is the surname of the following people
Elmar Klos (1910–1993), Czech film directorFabian Klos (born 1987), German football strikerFelix Klos (born 1992), American-Dutch historian, political scientist and authorKarol Kłos (born 1989), Polish volleyball playerOger Klos (born 1993), Dutch football midfielderRobert Kłos (born 1982), Polish football midfielderStanley L. Klos (born 1954), Italian basketball player, businessman, and historical preservationistStefan Klos (born 1971), German football goalkeeperTomasz Kłos (born 1973), Polish football defenderVladimir Klos, Czech-born German ballet dancer