Surname Oconor (Oconor 
) , in the world, is a rare cognomen. The last name Oconor is habitual in Nicaragua, where it is quite a rare surname, Costa Rica, and Ireland, where it is a rare surname. In absolute terms, this name is the most popular in Nicaragua, the United States, and Costa Rica. Very seldom, Oconor is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oconor | Indonesia, Nicaragua, Argentina, United States, Costa Rica |