| 's-Gravenwezel Observatory | Amberes | — |
| Astrolab | — | — |
| Beersel Hills Observatory | Beersel | — |
| Brixiis Astronomical Observatory | Kruibeke | — |
 Cointe Observatory | Cointe | — |
 Copernic Observatory | Provincia de Namur | — |
| Danastro Observatory | Doische | — |
| Dourbes Magnetic Observatory | — | — |
| Europlanetarium Genk | — | — |
 Former observatory of Brussels | Saint-Josse-ten-Noode | — |
| Frasnes-Lez-Anvaing observatory | Frasnes-lez-Anvaing | — |
| Geel observatory | Geel | — |
| Gromme observatory | Maasmechelen | — |
| Kelmis observatory | Kelmis | — |
| Koksijde observatory | Koksijde | — |
| Manhay Magnetic Observatory | — | — |
| Michiel Coignet Observatorium | — | — |
| Olmen observatory | Hendrick van Balen | — |
| Real Observatorio de Bélgica | Uccle | — |
| Uccle Solar Equatorial Table | Uccle | — |
| Urania public observatory | Hove | — |
| Vesqueville observatory | Vesqueville | — |