Barik Rud-e Jonubi Rural District should not be confused with Barik Rud-e Shomali Rural District.
| Barik Rud-e Jonubi Rural District | |
| Native Name: | Persian: دهستان باريك رود جنوبي |
| Native Name Lang: | fa |
| Settlement Type: | Rural District |
| Pushpin Map: | Iran |
| Coordinates Footnotes: | [1] |
| Subdivision Type: | Country |
| Subdivision Name: | Iran |
| Subdivision Type1: | Province |
| Subdivision Name1: | Mazandaran |
| Subdivision Type2: | County |
| Subdivision Name2: | Fereydunkenar |
| Subdivision Type3: | District |
| Subdivision Name3: | Central |
| Seat Type: | Capital |
| Seat: | Bi Namad |
| Unit Pref: | Metric |
| Population As Of: | 2016 |
| Population Total: | 4558 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
Barik Rud-e Jonubi Rural District (Persian: دهستان باريك رود جنوبي) is in the Central District of Fereydunkenar County, Mazandaran province, Iran. Its capital is the village of Bi Namad.[2]
After the 2006 National Census, Fereydunkenar District was separated from Babolsar County in the establishment of Fereydunkenar County, and Barik Rud-e Jonubi Rural District was created in the new Central District.[2]
At the time of the 2011 census, the rural district's population was 4,708 inhabitants in 1,393 households.[3] The 2016 census measured the population of the rural district as 4,558 in 1,549 households. The most populous of its nine villages was Bozorg Bisheh-ye Mahalleh, with 1,075 people.[4]