Mahavir Mandir is a Hindu temple dedicated to the god Hanuman, located in Patna, Bihar, India. Millions of pilgrims visit the temple every year. Acharya Kishore Kunal is the secretary of the Mahavir Mandir Temple Trust, Patna.

As per the Patna High Court judgment in 1948 the temple exists since time immemorial.[clarification needed] This temple gained popularity in 1947 with large number of Hindu refugees coming to Patna after the partition of India. Subsequently, temple was rebuilt as a concrete house at same time. Later this was demolished in 1987 to construct a huge marble temple. The idol of Sankat-Mochan, an avatar of Hanuman, stands in it.

Long winding queues can be seen at the temple on Saturdays and Tuesdays, the traditional worshiping days of Hanuman. Thousands of people visit Mahavir Mandir on every Rama Navami and New Year celebration.On Rama Navami, the queues can be over one kilometer long.