2017–18 Liga IV Prahova  The 2017–18 Liga IV Prahova, commonly known as Liga A Prahova, was the 50th season of the Liga IV Prahova, the fourth tier of the Romanian football league system. The season began on 18 August 2017 and ended on 10 June 2018. Relegated from Liga III  Promoted from Liga V Prahova Promoted to Liga III  Relegated to Liga V Prahova