Mahavir Mandir (Hindi: हनुमान मन्दिर) is one of the holiest Hindu temples dedicated to Lord Hanuman, located in Patna, Bihar, India. Million of pilgrims visit the temple every year and is the second most visited religious shrine in North India.

The Mahavir Mandir Trusts have the second highest budget in North India after the famous Maa Vaishno Devi shrine. The earning of Mahavir Mandir has gone now up to an average of Rs 1 lakh per day.

The first establishment date of temple is unknown. 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. Even this was broken down in 1987 to make a huge marble temple. The idol of Sankat-Mochan stands in it.

Long winding queues can be seen at the temple on Saturdays and Tuesdays, the traditional worshiping days of Lord Hanuman.

Thousands of people visit Mahavir Mandir on every Ram Navami and New Year celebration. On every Ram Navami waiting queues grow up to some kilometer long.