There are multiple origins and meanings for the name Zhan:
1. Turkic (Kazakh, Kyrgyz and Tatar (җан)) name-giving only, comes from the Persian (جان) [Jan] etymology (definition) - "soul, spirit; life; breath"
2. Chinese first name (战) meaning - "war, battle, fight" or of (占) meaning - "divine" or of (湛) meaning - "crystal, clear"
3. Form of the given name Jean
4. Buryat (жан) only name-giving meaning - "decoration".
May also refer to Zhan (feminine name ).