Operation: Doomsday is the debut solo album by American hip hop artist MF DOOM, marking his return to the hip hop scene after KMD's demise. It was released as CD & 2/LP on Fondle 'Em Records in April 20, 1999, and reissued by Sub Verse Records in 2011 with a slightly altered track listing. The album was financed by MF Grimm who also supplied many of the samples in his capacity as executive producer.
