Miss Earth 2005, the 5th edition of the Miss Earth pageant, was held on October 23, 2005, in Quezon City, Philippines. A total of 80 candidates from around the globe took part in the event.

Miss Earth is an annual international major beauty pageant based in the Philippines that advocates for environmental awareness, conservation and social responsibility. Along with Miss World, Miss Universe, and Miss International, it is one of the Big Four beauty pageants.