Klim is a surname. Notable people with this surname include:
Józef Piotr Klim (born 1960), Polish politician Lesley Klim, (born 1995), Namibian international rugby union player Michael Klim (born 1977), Polish-Australian swimmer Romuald Klim (1933–2011), Soviet hammer thrower
Fictional characters Niels Klim, the protagonist of the 18th century fantasy novel Niels Klim's Underground Travels
Sigma Klim, the protagonist of the 2012 adventure game Zero Escape: Virtue's Last Reward