Dominion Observatory
 The Dominion Observatory building in 2022 | |||
| Organization | Government of Canada | ||
|---|---|---|---|
| Observatory code | 790  | ||
| Location | Central Experimental Farm, Ottawa, Ontario, Canada | ||
| Coordinates | 45°23′37″N 75°42′52″W / 45.393591°N 75.714329°W | ||
| Established | 1902–1905 | ||
| Closed | 1970 (as observatory) | ||
| Telescopes | |||
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 Related media on Commons | |||
The Dominion Observatory was an astronomical observatory and federal scientific institution in Ottawa, Ontario. It operated from 1902 until 1970 and played a central role in astronomy, timekeeping, geophysics, and surveying in Canada. The main building, designed by Chief Dominion Architect David Ewart, was constructed on the Central Experimental Farm between 1902 and 1905 in the Romanesque Revival style.