Pinoy Big Brother: Celebrity Edition 1

Pinoy Big Brother: Celebrity Edition is the first celebrity edition of Pinoy Big Brother. It officially began on February 5, 2006 and ran for 56 days, ending on April 1, 2006, and were hosted by Toni Gonzaga and Mariel Rodriguez. This is the second series overall in the franchise. The series was originally scheduled to start a day before but due to the Wowowee ULTRA stampede that happened earlier that day, the management rescheduled it the next day. Due to the happening, Willie Revillame dropped his hosting stint from the show.

The prizes at stake cost three million Philippine pesos, which includes a million pesos for the winning housemate, another million for the winner's chosen charity, and another million for the charity of Big Brother's choice. Aside from the cash prizes, a condominium unit in Valenzuela City is also at stake.

The edition uses a different theme song, Sikat Ang Pinoy (Filipinos Are Famous), by Sam Milby and Toni Gonzaga, although the original theme song Pinoy Ako is occasionally used.