Monte Molião is an archaeological site located in the Municipality of Lagos, in Portugal .
The site is located on Monte Molião, an elevation north-west of Lagos city center, on the east bank of the Ribeira de Bensafrim, in the parish of São Sebastião.
At the end of the 19th century, Portuguese archaeologist, Estácio da Veiga, identified the remnants as being of a fortified town.
In the early 20th century Father José Joaquim Nunes discovered a Roman necropolis of imperial times the location of which is unknown today.
In 1992, a section of Monte Molião was destroyed by an extension of National Road 125.