Mahadev Jagannath Jankar is an Indian politician from Rashtriya Samaj Paksha. He is a former Cabinet Minister in the Government of Maharashtra as Minister for Animal Husbandry, Dairy Development and Fisheries Development in the Maha Yuti government. He is the founder and National President of Rashtriya Samaj Paksha, an Indian political party based in Maharashtra, founded in 2003.
He also contested a Lok Sabha seat in 2014 from Baramati where he finished in second place behind the winner, Supriya Sule of the Nationalist Congress Party by a huge margin of 69,719.
He was elected as a Member of the Legislative Council on 23 January 2015. He was promoted in July 2016 as Minister for Animal Husbandry, Dairy Development and Fisheries Department, Maharashtra State.