| Official Name: | Ghalanai |
| Native Name: | Urdu: {{nq|غلنئی Pushto; Pashto: {{script/Arabic|غلنۍ |
| Settlement Type: | Town |
| Pushpin Map: | Khyber Pakhtunkhwa#Pakistan |
| Pushpin Label Position: | right |
| Subdivision Type: | Country |
| Subdivision Name: |  Pakistan |
| Subdivision Type1: | Territory |
| Subdivision Type2: | Agency |
| Subdivision Name2: | Mohmand Agency |
| Subdivision Type3: | Tehsil |
| Subdivision Name3: | Halim Zai |
| Population Total: | 6,422 |
| Population As Of: | 2017 |
| Population Footnotes: | [1] |
| Elevation M: | 651 |
| Area Code Type: | Calling code |
| Timezone1: | PST |
| Utc Offset1: | +5 |
Ghalanai (Pushto; Pashto: غلنۍ, Urdu: {{nq|غلنئی) is the largest town and headquarter of Mohmand District in Khyber Pakhtunkhwa, province of Pakistan. It is located at 34°19'16N 71°24'0E with an altitude of 651 metres (2139 feet).
Ghalanai is expanding as its population are growing before 2001 only 3 to 4 small villages is now transforming a small town as it is now approximately merging all nearby villages like Dawat kor, Aba khail,Molyano Mandi or Sultani Mandi to North and west respectively,while Sra Karapi to the South,being a District headquarter there are many government offices/institution including Rescue 1122, DHQ Hospital DPO office DC, AC's offices judicial building, TMA upper Mohmand, Forest Deportment,NADRA, Election commission office, and Post office etc,
Ghalanai consist of six main villages, miangan, wazir kalay,pagul kor, Gigyani, naway kaly and buneer kaly in which Ghalanai Akhonzadgan is the oldest village and the village called Ghalanai akhonzadgan and later the otherSurrounding villages adopted the name and now Ghalanai is expanding.