Nicknames for Ontario
10 nicknames, sorted by where they actually get used.
Office-safe
Ont
formal
Onta
formal
Rio
formal
Playground-friendly
Ontay
casual
Ontaie
casual
Rioy
casual
Rioie
casual
Ony
casual
Onie
casual
Family nicknames
Ontkins
endearment
Ontario carries 10 common short forms — Ont, Onta, and Ontay. The list splits into 3 office-safe picks and 6 playground-friendly options so you can match the moment.