Radomir (Cyrillic script: Радомир) is a Slavic origin given name.
The etymology of the original form of the name, Radomer, is from rat - old Slavonic for war - and mer "merit, ability", i.e. "able warrior".
However, modern popular understanding in most Slavic languages would link the name to rad "care, joy, love" and mir "peace, world, fame".
Nicknames: Radek, Radko, Mirek, Mirko, Rado, Racho, Radka (f), Mirka (f).
The usual nickname derived from Radomir is Rasha.