If using a 3 letter abbreviation, it would be UKR.
2 letter abbreviation is UA. Also less popular UK, UA is the better abbreviation so there is less confusion.
Ukr & Uk is typically appropriate when used with translation, etc.
UA is used on Ukrainian license plates.
This is often abbreviated as r.This is often abbreviated as r.This is often abbreviated as r.This is often abbreviated as r.
it is abbreviated with um
It is abbreviated M.N.
It is abbreviated to the "web".
Ukraine.
It is abbreviated to the "web".
Syria is abbreviated as SYR.
ORG is how organization is abbreviated.
Decibel is abbreviated as "dB."
Percent is abbreviated pct. or the sign %
Yards is abbreviated as "yd."
Ukraine is part of Mars