UFC President Dana White made the announcement during a media conference call on Tuesday.
Lesnar’s appearance on the “Ultimate Fighter” could bring the biggest ratings ever for the long running Spike TV show, as he has already been tagged as the largest pay-per-view draw in the UFC.
The former heavyweight champion has been out of sight since his UFC 121 loss to current title holder Cain Velasquez in October.
Opposing Lesnar on the show and eventually a fight will be Junior Dos Santos, who comes into the show as an undefeated contender in the UFC.
Dos Santos was originally going to face Velasquez for the belt in 2011, but an injury forced the champion to the sidelines for at least half of the year.
Filming for the reality show will begin later this month and debut on Spike TV on March 30.
