President Barack Obama has said he is grateful for the leadership of his outgoing intelligence director Dennis Blair.
Mr Blair announced his resignation on Thursday, effective from May 28.
Mr Obama said in a statement that the intelligence community has performed admirably and effectively under Mr Blair, despite many challenges to the nation's security.
A retired Navy admiral, Mr Blair is the third director of national intelligence, a position created in response to the terrorist attacks on September 11 2001.
His tenure as the overseer of the nation's intelligence agencies was marked by turf battles with CIA Director Leon Panetta and controversial public comments in the aftermath of the Christmas Day airliner bombing attempt.