| Official Name: | Naniarchar |
| Native Name: | নানিয়াচর |
| Settlement Type: | Upazila |
| Subdivision Type: | Country |
| Subdivision Name: |  Bangladesh |
| Subdivision Type1: | Division |
| Subdivision Name1: | Chittagong |
| Subdivision Type2: | District |
| Subdivision Name2: | Rangamati |
| Population Total: | 43616 |
| Population As Of: | 2011 |
| Population Density Km2: | auto |
| Area Total Km2: | 393.67 |
| Timezone: | BST |
| Utc Offset: | +6 |
| Coordinates: | 22°N 92°W |
Naniarchar (Bengali: নানিয়াচর) is an Upazila of Rangamati District in the Division of Chittagong, Bangladesh.[1]
Naniarchar is located at 22.8583°N 92.1167°W. It has 9,481 units of household and total area 393.67km2.
As of the 2011 Bangladeshi census, Naniarchar upazila had 9,481 households and a population of 43,616. 10,324 (23.67%) were under 10 years of age. Naniarchar had an average literacy rate of 47.7%, compared to the national average of 51.8%, and a sex ratio of 938 females per 1000 males. 6,192 (14.20%) of the population lived in urban areas.[2] The ethnic population was 36290 (83.20%), of which Chakma were 35,314 and Marma 854.[3]
As of the 1991 Bangladesh census, Naniarchar has a population of 34561. Males constitute 52.67% of the population, and females 47.33%. This Upazila's eighteen up population is 16882. Naniarchar has an average literacy rate of 33.9% (7+ years), and the national average of 32.4% literate.[4]
Naniarchar Upazila is divided into four union parishads: Burighat, Ghilachhari, Naniarchar, and Sabekkhong. The union parishads are subdivided into 20 mauzas and 158 villages.[5]