The comedy writer-director-producer, whose screen credits include "Knocked Up," will unveil fresh material on stage and on screen during the Oscar telecast on Feb. 22, said show producers Bill Condon and Laurence Mark.
They said Apatow and his work will appear during a tribute to comedy.
"We're thrilled to say that our contemporary comedy master Judd Apatow is contributing both a film and live material to that part of the show," Condon said Wednesday.
"Judd was truly a prince to hop on and truly whip up special shooting for it," Mark added. "It's a big deal."
Condon and Mark have kept mostly mum on details of the show, but they have said that filmmakers of all stripes will participate. Last week they announced that "Moulin Rouge!" director Baz Luhrmann would create a production number featuring Oscar host Hugh Jackman. "Capote" director Bennett Miller is also contributing a film sequence to the telecast.
The Oscars will air live from the Kodak Theatre on ABC.
By Sandy Cohen