The name Addy is a girl's name . Addy and discussed in our forums with posts like ""Don't call me ___, I go by ___"".
From the experts:
This name has become increasingly popular, though usually with the Addie spelling. In fact, Addy/Addie has taken over for Maddie and Allie as one of the most frequently-heard short forms for a range of also-popular formal names, including Adeline, Adalynn, Adeliaide, and Addison. As Addy, it's the name of an American Girls doll.