| Neutraubling observatory | Neutraubling | — |
| Niemegk Magnetic Observatory | Niemegk | 78 m |
| Norderstedt observatory | Norderstedt | — |
| Oberfrauendorf observatory | Glashütte | — |
| Oberwiesenthal observatory | Oberwiesenthal | — |
 Observatorio Archenhold | Treptow-Köpenick | 41 m |
| Observatorio Astronómico de Bergish Gladbach | Bergisch Gladbach | 368 m |
 Observatorio astronómico universitario Pfaffenwald | Stuttgart | — |
 Observatorio de Altona | Hamburgo-Altona | — |
 Observatorio de Berlín | Berlín | — |
 Observatorio de Gotha | — | — |
 Observatorio de Hamburgo-Bergedorf | Bergedorf | — |
 Observatorio de Heidelberg-Königstuhl | Heidelberg | 560 m |
 Observatorio de Seeberg | Gotha | — |
 Observatorio de Sonneberg | Sonneberg | 638 m |
 Observatorio de Stuttgart | Stuttgart | 351 m |
 Observatorio de Zweibrücken | Dos Puentes | 321 m |
 Observatorio Ehrensberger | Traunstein | 605 m |
 Observatorio Europeo del Sur | — | — |
 Observatorio Karl Schwarzschild | Tautenburg | 341 m |
| Observatorium | Múnich | — |
| Observatorium In Reichenbach in Reichenbach (Landkreis Cham) | Reichenbach am Regen | — |
| Observatorium Michaeligasse 13 in Passau | Passau | — |
| Observatorium Prüfeninger Schloßstraße 73d in Regensburg | Ratisbona | — |
| Observatory for ionospheric research in Kuehlungsborn | Kühlungsborn | — |
 Observatory Großschwabhausen | Großschwabhausen | — |
 Observatory Sankt Andreasberg | Braunlage | 710 m |
| Oldenburg observatory | Oldemburgo | — |
| Owls and Ravens observatory | Holzgerlingen | — |
| Panker observatory | Panker | — |
 Peterberg Observatory | Nohfelden | 576 m |
 Planetarium Halle-Kanena | Halle | — |
 Prenzlau observatory | Prenzlau | — |
 Public Observatory Mainz | Distrito Centro | 94 m |
 Public Observatory Regensburg | Ratisbona | — |
 Radebeul Observatory | Radebeul | 172 m |
 Radiosternwarte Kiel | Kiel | — |
 Radolfzell bird observatory | Radolfzell am Bodensee | — |
| RaSo Observatory | Röhrsdorf | — |
 Regiomontanus-Sternwarte | Núremberg | 338 m |
| Reintal observatory | Múnich | — |
| Remeis Observatory | Bamberg | — |
 Remplin Observatory | Malchin | 9 m |
| Resse Observatory | Wedemark | — |
 Reutlingen Observatory and Planetarium | Reutlingen | 385 m |
| Riethnordhausen Observatory | Riethnordhausen, Saxony-Anhalt | — |
| Rimbach observatory | Rimbach | — |
 Robert-Mayer-Volks- und Schulsternwarte Heilbronn | Heilbronn | 174 m |