He will hold the position till December 31, 2018, the Ministry of Finance tweeted on Monday.
While the Finance track is managed by Subhash Chandra Garg, Secretary (Economic Affairs) as India's deputy to G -20, the Development track is coordinated by the Sherpa.
"The Department of Economic Affairs will provide necessary support to the Sherpa," the Finance Ministry said.
Das retired as Economic Affairs Secretary in May.
Das has been associated with the Government of India for almost 37 years. (ANI)