| Long Lopeng | |
| Coordinates: | 4.2833°N 115.4833°W |
| Pushpin Map: | Borneo |
| Pushpin Label Position: | right |
| Subdivision Type: | Country |
| Subdivision Name: |  Malaysia |
| Subdivision Type1: | State |
| Subdivision Type2: | Administrative Division |
| Subdivision Name2: | Lawas |
| Elevation M: | 2054 |
Long Lopeng (also known as Luping) is a settlement in the Lawas division of Sarawak, Malaysia. It lies approximately 646.4km (401.7miles) east-north-east of the state capital Kuching.
The 150 km logging track from Lawas to Ba'kelalan passes through Long Lopeng.Neighbouring settlements include: