The countries that have the most landslides per year, include, China, Pakistan, Nepal, USA, Japan, Italy, Switzerland, Indonesia, and The Phillipines, nearly all of which are known for having at least some parts of them being hilly. And if talking about just in general, it happens near the equator pretty often.
Left: Map of where landslides happen most often, and chances of them occuring again.
Fatalities are also a part of landslides sometimes. The areas with the most deaths due to landslides are in Central America, near the Himalayas, and Indonesia.
To The Left: Map of fatalities in areas on the globe in 2007