| Official Name: | Pahartali |
| Native Name: | পাহাড়তলী |
| Settlement Type: | Thana |
| Pushpin Map: | Bangladesh |
| Pushpin Map Caption: | Location in Bangladesh |
| Pushpin Label Position: | right |
| Subdivision Type: | Country |
| Subdivision Name: |  Bangladesh |
| Subdivision Type1: | Division |
| Subdivision Name1: | Chittagong Division |
| Subdivision Type2: | District |
| Subdivision Name2: | Chittagong District |
| Subdivision Type3: | City |
| Subdivision Name3: | Chittagong |
| Established Title: | Formed |
| Established Date: | 1978 |
| Population Total: | 198894 |
| Population As Of: | 1991 |
| Population Density Km2: | 4266 |
| Area Total Km2: | 8.44 |
| Leader Title: | Officer In Charge |
| Timezone: | BST |
| Utc Offset: | +6 |
| Coordinates: | 22°N 91°W |
Pahartali (Bengali: পাহাড়তলী) is a thana of Chattogram District in Chattogram Division, Bangladesh.
Pahartali is located at 22.3667°N 91.775°W. It has a total area 8.44 km².It is bounded by Sitakunda Upazila on the north, Halishahar and Double Mooring thanas on the south, Khulshi Thana on the east, and the Bay of Bengal on the west.
At the 1991 Bangladesh census, Pahartali had a population of 198,894, of whom 109,571 were aged 18 or older. Males constituted 57.45% of the population, and females 42.55%. Pahartali had an average literacy rate of 54% (7+ years), against the national average of 32.4%.[1]