| Official Name: | Rangunia |
| Native Name: | রাঙ্গুনিয়া |
| Settlement Type: | Upazila |
| Subdivision Type: | Country |
| Subdivision Name: |  Bangladesh |
| Subdivision Type1: | Division |
| Subdivision Name1: | Chittagong |
| Subdivision Type2: | District |
| Subdivision Name2: | Chittagong |
| Population Total: | 392904 |
| Population As Of: | 2022 |
| Population Footnotes: | [1] |
| Population Density Km2: | auto |
| Area Total Km2: | 361.54 |
| Seat Type: | Headquarters |
| Seat: | Rangunia Upazila Complex |
| Subdivision Type4: | Jatiya Sangsad constituency |
| Subdivision Name4: | Chittagong-7 |
| Governing Body: | Upazila Council |
| Leader Title: | MP |
| Leader Name: | Vacant |
| Leader Title1: | Chairman |
| Leader Name1: | Vacant |
| Leader Title2: | Chief Executive Officer |
| Leader Name2: | Md. Raihan Mehbub |
| Timezone: | BST |
| Utc Offset: | +6 |
| Coordinates: | 22°N 92°W |
| Postal Code Type: | Postal code |
| Postal Code: | 4360[2] |
| Area Code: | 03025[3] |
| Website: | rangunia.ctg.gov.bd |
Rangunia (bn|রাঙ্গুনিয়া উপজেলা) is an upazila of Chattogram District in Chattogram Division, Bangladesh.
Rangunia Upazila is located in between 22°18' and 22°37' north latitudes and in between 91°58' and 92°08' east longitudes. It has 67,792 households and a total area of 361.54 km2.
It is bounded by Chandanaish Upazila on the south; Patiya Upazila, Boalkhali Upazila, Raozan Upazila & Kawkhali Upazila of Rangamati District on the west; Kawkhali Upazila of Rangamati District on the north and Kaptai Upazila & Rajasthali Upazila of Rangamati District and Bandarban Sadar Upazila on the east. Rangunia is the administrative headquarter of this upazila.
Main river: Karnaphuli, Ichamoti.
Chakma kings (Shukdev Roy, Sher Daulat Khan, Jan Baksh Khan, Tabbar Khan, Jabbar Khan, Dharam Baksh Khan, Rani Kalindi, Harish Chandra Rai and others) ruled this area since 1757. Chakma King Harish Chandra transferred his capital from Rajanagar of Rangunia to Rangamati in 1874.
As of the 2022 Bangladeshi census, Rangunia upazila had a population of 392,904. The ethnic population was 4,678 (1.19%), of which the Marma were 2,734, Tanchangya people 931 and Chakma 828.
Rangunia Thana was formed on 24 January 1962 and it was turned into an upazila in 1983. Municipality was formed on 4 July 2000.
Rangunia Upazila is divided into Rangunia Municipality and 15 union parishads: Betagi, Chandraghona, Dakshin Rajanagar, Hosnabad, Islampur, Kodala, Lalanagar, Mariumnagar, Padua, Parua, Pomara, Rajanagar, Rangunia, Sharafbhata, and Silak. The union parishads are subdivided into 73 mauzas and 138 villages.
Rangunia Municipality is subdivided into 9 wards and 22 mahallas.[4]
Upazila health complex 1, family planning centre 11, satellite clinic 2.
Mosque 359, Temple 42, Tomb 3, Pagoda 41, Sacred place 1.
See also: Education in Bangladesh. Rangunia Upazila had an average literacy rate of 70.75%.
There are 9 colleges, 40 secondary schools, 25 madrasas, 179 primary school and many other registered and kindergartens in the upazila.
According to Banglapedia, Pomara High School, founded in 1928, Rangunia Ideal Multilateral Pilot High School (1915), Rangunia Khilmogal Rashik High School (1926), Rangunia Majumdarkhil High School (1927), and Uttar Rangunia High School (1942) are notable secondary schools.[5]
Main sources of income are: Agriculture 39.71%, non-agricultural labourer 4.30%, industry 0.58%, commerce 16.24%, transport and communication 3.57%, service 12.31%, construction 1.03%, religious service 0.49%, rent and remittance 10.91% and others 10.86%.
In 1971, encounters were held between the freedom fighters and the Pak army at Ranirhat, Rowajarhat and Rangunia. The Pak army conducted looting, burning, rape and mass killing in various places of the upazila.