Nicknames for Caillou
10 nicknames, sorted by where they actually get used.
Office-safe
Cail
formal
Lou
formal
Playground-friendly
Cai
casual
Caily
casual
Cailie
casual
Louy
casual
Louie
casual
Cay
casual
Caie
casual
Family nicknames
Caikins
endearment
Caillou carries 10 common short forms — Cai, Cail, and Caily. The list splits into 2 office-safe picks and 7 playground-friendly options so you can match the moment.