A spokesman for the Central Bureau of Investigation, which investigated the case, said late on Monday that Gurmeet Ram Rahim Singh would serve two consecutive 10-year-terms for the two rape convictions.
An Indian judge sentenced a self-styled "godman", whose followers went on a deadly rampage after he was convicted of rape last week, to 10 years' jail on Monday.
The death toll from the violence climbed to 37, with 31 fatalities in the city of Panchkula and six from the town of Sirsa, where Singh's Dera Sacha Sauda, or True Deal Sect, is headquartered.
Indian authorities have arrested hundreds of people and cancelled more than 300 trains passing through two northern states after at least 30 people were killed in violent protests following the conviction of a self-styled 'godman'.
Supporters of the 'godman' rampaged in response, attacking railway stations, petrol stations and television vans in towns across the northern states of Punjab and Haryana, witnesses said.
At least 11 people were killed and scores injured as violent protests erupted in India on Friday after a court convicted a self-styled "godman" of raping two women, angering thousands of his supporters who said he was innocent, police and lawyers said.
The North had claimed this month it successfully test-fired a submarine-launched ballistic missile, which would allow the deployment of nuclear weapons far beyond the Korean peninsula.