| Greenside | |
| Pushpin Map: | South Africa Mpumalanga#South Africa |
| Coordinates: | -25.001°N 28.73°W |
| Subdivision Type: | Country |
| Subdivision Name: | South Africa |
| Subdivision Type1: | Province |
| Subdivision Name1: | Mpumalanga |
| Subdivision Type2: | District |
| Subdivision Name2: | Nkangala |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Dr JS Moroka |
| Subdivision Type4: | Main Place |
| Established Title: | Established |
| Leader Title: | Councillor |
| Population As Of: | 2011 |
| Population Density Km2: | auto |
| Demographics Type1: | Racial makeup (2011) |
| Demographics1 Title1: | Black African |
| Demographics1 Title2: | Coloured |
| Demographics1 Title3: | Indian/Asian |
| Demographics1 Title4: | White |
| Demographics1 Title5: | Other |
| Demographics Type2: | First languages (2011) |
| Demographics2 Title1: | English |
| Demographics2 Title2: | Afrikaans |
| Demographics2 Title3: | Zulu |
| Demographics2 Title4: | Tswana |
| Demographics2 Title5: | Other |
| Timezone1: | SAST |
| Utc Offset1: | +2 |
| Postal Code Type: | Postal code (street) |
| Postal Code: | 2193 |
| Postal2 Code Type: | PO box |
| Postal2 Code: | 2034 |
| Area Code Type: | Area code |
Greenside is a town in Nkangala District Municipality in the Mpumalanga province of South Africa, 60 km west of Siyabuswa.