Samuel John Duluk is an Australian former politician. He was a member of the South Australian House of Assembly from 2015 to 2022, representing Davenport until 2018 and then Waite. He was formerly a Liberal, but resigned to sit as an independent in 2020 after allegations of inappropriate behaviour. He ran in the 2022 South Australian state election as an independent but came in third place. Since retiring from the parliament, Duluk has worked as a political lobbyist.