| Phu Khi Suk | |
| Other Name: | ภูขี้สุข |
| Elevation M: | 753 |
| Listing: | List of mountains in Thailand |
| Range: | Dângrêk Range |
| Map: | Thailand |
| Map Size: | 200 |
| Label Position: | bottom |
| Coordinates: | 14.3169°N 105.1078°W |
| Coordinates Ref: | [1] |
| Type: | Sandstone |
| First Ascent: | unknown |
| Easiest Route: | hike |
Phu Khi Suk (th|ภูขี้สุข, pronounced as /th/), known in Khmer as Phnom Dângrêk (km|ភ្នំដងរែក, in Central Khmer pronounced as /pʰnum ɗɑːŋrɛːk/) is a 753m (2,470feet) mountain in Ubon Ratchathani Province, Thailand.[2]
Phu Khi Suk is the highest peak of the Dângrêk Range, rising at the east end of the long mountain chain. It is close to the Chong Bok (603 m) area, a tripoint where the borders of Thailand, Laos, and Cambodia intersect.[3]