Two sources familiar with the 2012 Oscars telecast who were not authorized to talk publicly confirmed that Crystal would host, replacing the recently departed Eddie Murphy.
A spokeswoman for the Academy of Motion Picture Arts and Sciences did not immediately return a call seeking comment.
At age 63, Crystal would be the oldest solo host of the show since Bob Hope in 1978.
Crystal, who has hosted some of Oscars' most successful modern telecasts, had been a popular public choice since Murphy departed Wednesday. The chorus first began when Crystal appeared on the 2011 show presenting a tribute to Hope.