There are multiple origins and meanings for the name Jan:
1. Persian name-giving component only (جان) etymology (definition) - "soul; spirit; heart; breath; life; power, energy; vitality; darling; beloved; precious"
2. German diminutive form of the Biblical name John/Iohannes/Yochanan meaning - "God (Ya/Jehovah) is merciful (Hanan)"
3. Hindi given name (जन) meaning - "person; people".
May also refer to Jan (feminine name)