{{Infobox Indian politician | name = Prabhunath Singh | image = | caption = | residence =[[mashrakh Chapra | death_date = | death_place = | office = Member of the India Parliament
for [Sasaram (Bihar Lok Sabha constituency)Sasaram]] | constituency = | term =2013 to 2018 and won byepoll on rjd ticket | predecessor = Uma Shankar Singh | successor =Janardan Singh Sigriwal | party =Rashtriya Janata Dal | religion = Hinduism | spouse = Binda devi | children = | website = | footnotes = | date = 26 September | | year = 2013 | | source = http://164.100.24.208/ls/lsmember/biodata.asp?mpsno=450 }}
Prabhunath Singh aka Babu saheb is a criminal turned politician from Bihar, India, was a member of the 14th Lok Sabha. He represented the Maharajganj constituency of Bihar from 2004 to 2009 and is a member of the Rashtriya Janata Dal political party. Prabhunath Singh is a powerful leader of Bihar, he hails from a rich & influential Rajput Zamindar family.
He was born in Chhapra in rajput family. He is accused in multiple cases brother name sri. chandrakeshwar singh and kedar singh .
He represented the Maharajganj constituency of Bihar from 2004 to 2009 on JDU ticket. In 2009, he contested on jdu ticket, but lost to another rajput leader Uma Shankar Singh of rjd narrowly. After the death of Uma Shankar Singh, seat went vacant. He switched the side and contested on rjd ticket. This time he defeated the jdu's nominee P.K. Shahi. In 2014, he was again the nominee of rjd but lost to candidate of BJP Janardhan Singh Sigriwal in Modi wave.