Marinha Grande (Portuguese pronunciation: [mɐˈɾiɲɐ ˈɣɾɐ̃d(ɨ)]) is a municipality in the Leiria District, Portugal. The population in 2021 was 39,032, in an area of 187.25 km². The city itself has a population of 32,330. It is located right in the middle of the 700-year-old Leiria pine forest covering 100 square kilometres, and near excellent beaches such as , Nazaré, and São Pedro de Moel. The present Mayor is Aurélio Ferreira, elected by the independent movement +MPM, a coalition formed by MPM and +Concelho. The municipal holiday is Ascension Day.