Sigismund Jožinovic (Ro-Czech: Zikmund Jožinovic) was king of Ro-Czechia from 1347 to 1359 and 1361 to 1362. He inherited the throne from his father and lost it during the war with New Romarkia. After the military intervention carried out by his allies, he was put on the throne again, but he died by poison in 1362.