| Rietfontein | |
| Pushpin Map: | South Africa Northern Cape#South Africa |
| Coordinates: | -26.7333°N 20.0333°W |
| Subdivision Type: | Country |
| Subdivision Name: | South Africa |
| Subdivision Type1: | Province |
| Subdivision Name1: | Northern Cape |
| Subdivision Type2: | District |
| Subdivision Name2: | ZF Mgcawu |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Dawid Kruiper |
| Subdivision Type4: | Main Place |
| Established Title: | Established |
| Leader Title: | Councillor |
| Area Footnotes: | [1] |
| Area Total Km2: | 1.80 |
| Population Total: | 2293 |
| Population As Of: | 2011 |
| Population Density Km2: | auto |
| Demographics Type1: | Racial makeup (2011) |
| Demographics1 Title1: | Black African |
| Demographics1 Info1: | 5,6% |
| Demographics1 Title2: | Coloured |
| Demographics1 Info2: | 92.5% |
| Demographics1 Title3: | Indian/Asian |
| Demographics1 Info3: | 1.0% |
| Demographics1 Title4: | White |
| Demographics1 Info4: | 0,5% |
| Demographics1 Title5: | Other |
| Demographics1 Info5: | 0,3% |
| Demographics Type2: | First languages (2011) |
| Demographics2 Title1: | Afrikaans |
| Demographics2 Info1: | 25.5% |
| Demographics2 Title2: | Sign language |
| Demographics2 Info2: | 1.4% |
| Demographics2 Title3: | English |
| Demographics2 Info3: | 1.0% |
| Demographics2 Title4: | Tswana |
| Demographics2 Info4: | 75.0% |
| Demographics2 Title5: | Other |
| Demographics2 Info5: | 1.1% |
| Timezone1: | SAST |
| Utc Offset1: | +2 |
| Postal Code Type: | Postal code (street) |
| Postal Code: | 8811 |
| Postal2 Code Type: | PO box |
| Postal2 Code: | 8811 |
| Area Code Type: | Area code |
Rietfontein is a town in ZF Mgcawu District Municipality located in the Northern Cape province of South Africa. It functions as the Rietfontein Borderpost with Namibia during the day hours of 08:00-16:30, that gives access to and from south-east Namibia via Aroab on the C16 main road.