Nikolai Kornhass (German: Nikolai Kornhaß, born 28 March 1993) is a German Paralympic judoka. He represented Germany at the 2016 Summer Paralympics held in Rio de Janeiro, Brazil and he won a bronze medal in the men's 73 kg event. At the 2015 IBSA European Judo Championships he won a bronze medal in the men's 73 kg event. He won the gold medal at the in the men's 73 kg event.