Rescuers are searching through rubble for around 20 more people believed missing in the western part of the country.
The home ministry said the landslides struck the villages near the resort town of Pokhara, 125 km (77 miles) west of Kathmandu shortly after midnight. At least 22 houses were destroyed.
18 people injured in the disaster have been taken to local hospitals for treatment, police chief Kedar Rajaure told reporters on the ground in the Kaski area.
Last month, 35 people died when a landslide crushed villages in northeastern Nepal.
