The Agam Kuan is a fathomless well built by the emperor Ashoka and is one of the historic remains situated in Patna in Bihar state, India. This well is supposed to be a part of the legendary hall built and demolished by Ashoka, the Mauryan Emperor. This well has endless source of water.

Nearby this well locates the Shitala Devi temple, dedicated to Shitala Devi. This temple houses the pindas of the 'Saptamatrikas' (the seven mother goddesses). The temple is widely famous for its potency in curing smallpox and chicken pox, as with all Shitala Devi temples.