Grzegorz Miętus ([ˈɡʐɛɡɔʐ ˈmjɛntus]; born February 20, 1993, in Zakopane) is a Polish ski jumper.

Grzegorz Miętus was born in Zakopane, Poland, but lives in Dzianisz.

His elder brother, Krzysztof Miętus, has competed in ski jumping at the Winter Olympics.

He competed at the World Junior Championships 2009 in Štrbské Pleso, where the individual was 20th and won a bronze medal in the normal hill with Polish team - Maciej Kot, Jakub Kot and Andrzej Zapotoczny.

On February 3, 2010, won first points in World Cup competition in Klingenthal, where has 22nd position.