OK
OK serves as the postal abbreviation for Oklahoma, a regional shorthand for Ohio and Kentucky, and occasionally as an informal or historical term in various contexts.
Medical
Miscellaneous
Other Kitty
Original Kaos
Oll Korrekt
Octopus Kicking
Oh Koala
Okay Kitty
Orrin Kendall
Oll Korrect
Old Kingdom
One Kiss
Olla Kalla
Ola Kala
Objection Killer
Community
Opportunity Knocking
Older Kids
Olympia Kiwanis
Oakland Kids
Orrins Kendall
All Correct
Ola Kala (all is alright)