Ardalan was a vassaldom in Persia.

Ardalan (Persian: اردلان) may also refer to:

• Ardalan, East Azerbaijan
• Ardalan, Qazvin
• Ardalan, Razavi Khorasan
• Ardalan Rural District, in East Azerbaijan Province

• Ardalan Afshar (born 1984), Austrian rapper of Iranian descent better known as Nazar
• Ardalan Ashtiani (born 1982), Iranian football player
• Ardalan Esmaili (born 1986), Iranian-born Swedish actor
• Ardalan Shekarabi (born 1978), Swedish politician of Iranian descent
• Ardalan Shoja Kaveh (born 1963), Iranian actor

• Aligholi Ardalan (1900–1986), Iranian diplomat
• Davar Ardalan, American-Iranian radio producer
• Farhad Ardalan (born 1939), Iranian physicist
• Mastoureh Ardalan (1805 –1848), Kurdish poet and writer
• Niloufar Ardalan (born 1985), Iranian football player
• Parvin Ardalan (born 1967), Iranian women's rights activist, writer and journalist