Rio Maior is a city and municipality in Ribatejo, Portugal.
Rio Maior (RREE-oo muh-YAWR, /ˈʁi.u ma.ˈjɔɾ/) municipality has 21,192 residents, with about 8,000 living in the city proper.
Rio Maior is on the A15 motorway (Autoestrada do Atlântico).
Regional bus service is provided by Rodoviária do Tejo.
Primary administrative division