Family name Авишай (Avishai 
, Avishay 
, Авишай 
) , all over the world, is a rare cognomen. The cognomen Авишай is characteristic of Mauritius, where it is quite a rare surname, Israel, and Bulgaria, where it is a rare surname. Not in comparison with a country's population, the name is most common in Israel, the United States, and Mauritius. Also, Авишай is the forename as well as the last name.