Cognomen キディ (Kiddy 
, キディ) , in all the world, is quite a rare last name. The last name キディ is characteristic of Malawi, where it is quite a rare surname, Ghana, where it is a rare surname, and the United Kingdom. Measured by absolute frequency, this name is the most popular in the United States, the United Kingdom, and Malawi. Also, キディ is the forename as well as the last name.