Cognomen Йоанн (Yoann 
, Yohann , Йоанн 
) , around the globe, is quite a rare surname. The cognomen Йоанн is habitual in Guadeloupe, where it is quite a common surname, France, where it is quite a rare surname, and Ivory Coast, where it is a rare surname. Predominantly, Йоанн is the forename as well as the last name.