Darko Kralj (born 6 June 1971 in Garešnica) is a Croatian Paralympic athlete competing mainly in shot put events.
He lost his left leg in a missile attack in 1991.At the 2008 Summer Paralympics in Beijing, he won a gold medal in the men's F42 shot put event improving his world record with 14.43 metres.
At the 2011 IPC Athletics World Championships held in Christchurch, Kralj won a silver medal.The King, a Croatian-language film about Kralj's life directed by Dejan Acimovic, was released in 2012.