Miss Philippines Earth 2006 was the sixth edition of the Miss Philippines Earth pageant. It was held on May 14, 2006 at the University of the Philippines Theater in Quezon City, Philippines.
The contest was won by Cathy Untalan, who was crowned by the previous winner, Genebelle Raagas. Untalan won against 23 other candidates and represented the Philippines at Miss Earth 2006. The event was broadcast by ABS-CBN Network in the Philippines and The Filipino Channel internationally.
The twenty-four candidates that competed for the title were formally presented at the poolside of Hotel Intercontinental in Makati on April 21, 2007. They introduced themselves and spoke about their environmental platforms to the media. Philippines regions and some Filipino communities abroad were represented by candidates who won in separate searches.
The following is the list of the official contestants of Miss Philippines Earth 2005 representing various regions in the Philippines: