| Observatory | |
| Pushpin Map: | South Africa Gauteng#South Africa |
| Coordinates: | -26.176°N 28.082°W |
| Subdivision Type: | Country |
| Subdivision Name: | South Africa |
| Subdivision Type1: | Province |
| Subdivision Name1: | Gauteng |
| Subdivision Type2: | District |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | City of Johannesburg |
| Subdivision Type4: | Main Place |
| Subdivision Name4: | Johannesburg |
| Established Title: | Established |
| Leader Title: | Councillor |
| Area Footnotes: | [1] |
| Area Total Km2: | 0.66 |
| Population Total: | 490 |
| Population As Of: | 2011 |
| Population Density Km2: | auto |
| Demographics Type1: | Racial makeup (2011) |
| Demographics1 Title1: | Black African |
| Demographics1 Info1: | 32.9% |
| Demographics1 Title2: | Coloured |
| Demographics1 Info2: | 1.8% |
| Demographics1 Title3: | Indian/Asian |
| Demographics1 Info3: | 4.3% |
| Demographics1 Title4: | White |
| Demographics1 Info4: | 60.6% |
| Demographics1 Title5: | Other |
| Demographics1 Info5: | 0.4% |
| Demographics Type2: | First languages (2011) |
| Demographics2 Title1: | English |
| Demographics2 Info1: | 71.0% |
| Demographics2 Title2: | Zulu |
| Demographics2 Info2: | 6.9% |
| Demographics2 Title3: | Afrikaans |
| Demographics2 Info3: | 3.9% |
| Demographics2 Title4: | Tswana |
| Demographics2 Info4: | 3.1% |
| Demographics2 Title5: | Other |
| Demographics2 Info5: | 15.1% |
| Timezone1: | SAST |
| Utc Offset1: | +2 |
| Postal Code Type: | Postal code (street) |
| Postal Code: | 2198 |
| Postal2 Code Type: | PO box |
| Postal2 Code: | 2187 |
| Area Code Type: | Area code |
Observatory is a suburb in Johannesburg's east and is located in Region E of the City of Johannesburg Metropolitan Municipality; it borders the suburbs of Houghton Estate, Cyrildene, Linksfield, Bellevue, Bellevue East and Dewetshof.
It is named for the Union Observatory established in early 1903, sited on Observatory Ridge, the city's highest point. The suburb is situated on part of an old Witwatersrand farm called Doornfontein.[2] It was established in 1903.[2]
It is a well-established suburb: Observatory Girls' Primary was founded in 1918, and Observatory Golf Course founded in 1912 is the oldest golf club in Johannesburg still operating from its original ground. The suburb housed the Yeshivah Gedolah of Johannesburg, until its relocation to Glenhazel.