Mülenen is a village in the Frutigen-Niedersimmental administrative district of the Swiss Canton of Bern . The village is divided between the municipalities of Reichenbach im Kandertal and Aeschi bei Spiez .

Mülenen station, on the Lötschberg railway line, and the lower station of the Niesenbahn funicular, are both in the village.

Mülenen Castle and the Letzi Mülenen wall are a ruined medieval fortification and heritage site of national significance located in the village.