Cognomen Chigai (Chigai 
, Шигай 
) , in all the world, is a rare family name. The cognomen Chigai is habitual in Moldova, where it is quite a rare surname, Ukraine, where it is a rare surname, and Kyrgyzstan. In absolute terms, the name is most common in Eastern Europe, particularly Moldova, Ukraine, and Russia. Likewise, Chigai is the forename as well as the last name.