Nicknames for Caitlyn
4 nicknames, sorted by where they actually get used.
Office-safe
Cait
formal
Kate
formal
Playground-friendly
Katie
casual
Cay
casual
Caitlyn carries 4 documented short forms — Cait, Kate, and Katie — drawn from its Irish-rooted roots. The list splits into 2 office-safe picks and 2 playground-friendly options so you can match the moment.