Kay would work as a nickname for any name with a "K" sound at the beginning -
Katie,
Karolina,
Kayley,
Kassidy,
Kassandra,
Karla
**
Emma**
http://www.behindthename.com/pnl/54547
Favourites:
Eve,
Alice,
Norah,
Isla //
George,
Charlie,
Arthur,
Oscar