| Andean Northern observatory | Nummi-Pusula | — |
| Clayhole observatory | Jokela | — |
 Hankasalmi Observatory | Hankasalmi | — |
| Ilmala observatory | Helsinki | — |
| Jakokoski Observatory | Jakokoski | — |
 Kauppi observatory | Tampere | 135 m |
| Kevola Observatory | Paimio | 50 m |
 Kilpisjärvi Atmospheric Imaging Receiver Array | Kilpisjärvi | 495 m |
| Komakallio observatory | Kirkkonummi | — |
| Lahti Observatory | Lahti | — |
| Lumijoki observatory | Lumijoki | — |
| Lågskär bird observatory | Lemland | — |
| Metsahovi Optical Telescope observatory | Kirkkonummi | — |
| Metsala observatory | Espoo | — |
| Metsähovi Geodetic Research Station | Kirkkonummi | — |
 Metsähovi Radio Observatory | Kirkkonummi | — |
| Nurmijarvi Magnetic Observatory | — | — |
 Nyrölä Observatory | Nyrölä | 209 m |
 Observatorio de Iso-Heikkilä | Turku | 20 m |
 Observatorio Universitario de Helsinki | Helsinki | 28 m |
 Rihlaperä Observatory | Kypärämäki | — |
| Signilskär Bird Observatory | Hammarland | — |
| Slope Rock observatory | Hyvinkää | — |
| Sodankyla Magnetic Observatory | Sodankylä | — |
 Taurus Hill observatory | Varkaus | — |
 Tuorla Observatory | Kaarina | 60 m |
 Tähtikallio Observatory & Education Center | Orimattila | — |
 Ursa Observatory | Helsinki | — |
 Vartiovuori Observatory | Turku | 46 m |
| Ähtäri Observatory | Ähtäri | — |