Bishwanath Singh (died 1999) was an Indian heavyweight freestyle wrestler and Indian Army servicemember. In 1966 he won a silver medal at the Asian Games and a bronze at the Commonwealth Games. He also won silver medals at the 1970 and 1974 Commonwealth Games. He should not be confused with fellow wrestlers Bishambar Singh and Bhim Singh who competed in the same period, but in different weight categories. He was born in a village called Dumrahar (Near Darauli) in Siwan, Bihar.[1][2]