Look up Placentia in Wiktionary, the free dictionary.
Placentia may refer to:
- Palace of Placentia, an English royal palace
- Placentia, Italy, a Roman city known today as Piacenza
- Placentia, Newfoundland and Labrador, Canada
- Placentia Bay, body of water
- Placentia, California, United States
- Placentia station, proposed train station in Placentia
- Battle of Placentia (disambiguation)
- Placentia Bay
- HMS Placentia, the name of two ships of the Royal Navy