The resignation of Das was accepted by BJD President and Chief Minister Naveen Patnaik, the release said here.
Following this development, Rajya Sabha MP Dr Dilip Tirkey was appointed as the new leader of the BJD parliamentary party in Rajya Sabha, it said.
"I have been targetted by certain individuals for the last one-and-a-half month. False and fabricated allegations are being made one after other systematically to tarnish my image," Das said in his resignation addressed to Patnaik.
"I do hereby tender my resignation from the post of leader of Biju Janata Dal Parliamentary Party and request you to accept it," Das said in his letter.
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Das has been embroiled in controversy amid allegation about acquisition of multiple plots and houses under the discretionary quota as well as accumulation of property by him, his son and family members which he denied as baseless.
Das's son Pranab Balabantray, MLA from Dharmshala in Jajpur district, was incidentally interrogated by CBI last night in connection with a chitfund scam, sources said.
However, Das continues to be a vice-president of the ruling BJD.