Surname Plàcid (Placidus 
, Plàcid 
) , globally, is a rare family name. The last name Plàcid is characteristic of Malaysia, where it is a very rare surname, Nigeria, and Tanzania. Not in comparison with a country's population, it is the most numerous in Nigeria, Germany, and Malaysia. More prevalently, Plàcid is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Placidus | Nigeria, Germany, Sri Lanka, Indonesia, Czechia |
| Plàcid | Panama, Spain |