What is the Italian translation of the name 'Jay'?

Jay is an English loan name in Italian.

Specifically, it is a masculine proper noun. It tends to be a nickname for "James." Giacomo is the Italian equivalent of "James." People with that names sometimes have the nickname Giachi.

The pronunciation is "DJAH-kee" in terms of the Italian nickname and "DJAH-koh-moh" in terms of the complete Italian name.