Cognomen Peir (Peer 
, Pere 
, Peir 
) , all around the world, is a common last name. The last name Peir is habitual in Spain, where it is quite a common surname, Austria, and the Dominican Republic (explore the name in all countries). Measured by absolute frequency, it is the most numerous in Spain, India, and the United States. More prevalently, Peir is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Peer | Spain, India, United States, Pakistan, Germany |
| Pere | Dominican Republic, Spain, India, United States, Germany |
| Peir | Philippines, Spain, India, United States, Pakistan |
| Пеир | Russia, Kyrgyzstan, Belarus |