Mníšek pod Brdy (Czech pronunciation: [ˈmɲiːʃɛk ˈpodbr̩dɪ]) is a town in Prague-West District in the Central Bohemian Region of the Czech Republic. It has about 5,900 inhabitants. The town is a part of the Prague metropolitan area, south-west of Prague. The centre of the town is historically significant and is protected by law as urban monument zone.
Mníšek pod Brdy hosts an annual cross-country Ultramarathon of 50 km length, which is part of the European Ultramarathon Cup.