Klaebo and his Norwegian teammate Einar Hedegart comfortably won the team sprint free event, with Klaebo slowing before the finish line to soak up the applause of the crowd.
The USA took the silver medal and Italy won bronze.
It was 29-year-old Klaebo's fifth gold medal of these Games alone, meaning he has won every event he has entered - and he has one more event to go.
The only athlete in Winter or Summer Games history with more Olympic titles is American swimmer Michael Phelps, who won 23 golds.
Klaebo won three golds at the 2018 Pyeongchang Winter Games, and another two in Beijing in 2022.
He also has a silver and bronze medal from the Beijing Games.