Last name Бибай (Bibai 
, Бибай 
, Bibaj 
) , all over the world, is quite a rare cognomen. The cognomen Бибай is habitual in Albania, where it is quite a common surname, Kosovo, and Slovenia, where it is quite a rare surname. In absolute terms, it is commonest in Albania, Kosovo, and Cameroon. Likewise, Бибай is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bibai | Japan, China, United States, India, Cameroon |
| Бибай | Kazakhstan |
| Bibaj | Italy, Kosovo, Serbia, India, Albania |