There are multiple origins and meanings for the name Yaromir:
1. Slavic (Russian Яромир) name, combination of the Yarilo - "God of sun" + Mir - "peace; world" ="ardent and peaceful; one who makes the world bright"
2. Derivative form of the Turkic name YarAmir, composed of the Yar - "friend, helper" + Amir - "king, prince".