The top 10 highest mountains of the world are: 1. Mount Everest/Sagarmatha/Chomolungma, Nepal- China, 2. K2 Pakistan -China, 3. Kangchenjunga, Nepal- India, 4. Lhotse, Nepal- China, 5. Makalu, Nepal- China, 6. Cho Oyu, Nepal – China, 7. Dhaulagari 1, Nepal, 8. Manaslu, Manaslu Himal, Nepal, 9. Nanga Parbat, Nanga Parbat Himalayas, Pakistan, 10.Annapurna Massif, Nepal