Agam Kuan is an ancient well and archaeological site in Patna, India. It is said to date back to the period of Mauryan emperor, Ashoka (304–232 BCE). Circular in shape, the well is lined with brick in the upper 13m and contains wooden rings in the remaining 19m.
The Agam Kuan is set within an archaeological site identified by the Archaeological Survey of India which also contains the adjacent Shitala Devi temple where the folk deity Shitala Devi is venerated. Inside this temple, the pindas of the Saptamatrikas (the seven mother goddesses) are worshipped. The temple is widely revered for its belief in curing smallpox and chicken pox.