Dmitri Peskov told Echo of Moscow that Depardieu, who has threatened to relocate outside France to protest a planned 75-per-cent income tax, would be handed a Russian passport.
Putin on Thursday signed a decree granting Depardieu, 64, Russian citizenship after the French actor applied for it.
The actor has bought a property in a village of tax exiles in Belgium and told French Prime Minister Jean-Marc Ayrault that he would give up his French passport.
Depardieu, who was France's best-paid actor in 2008, was pilloried by the French media for announcing his move to Nechin, a village in southern Belgium, 1 kilometre from the French town of Roubaix.
Voice of Russia, dpa