Family name 吉迪 (Guidi 
, Giddy 
, 吉迪 
) , globally, is a common surname. The family name 吉迪 is characteristic of San Marino, where it is a widespread surname, Italy, where it is quite a common surname, and Argentina, where it is quite a rare surname. In absolute terms, this name is the most popular in Italy, Argentina, and Brazil. Very seldom, 吉迪 is the forename as well as the last name.