Koh Phi Phi is a group of islands in Thailand between Koh Krabi and the Strait of Malacca, off the coast of Thailand. They are part of Krabi Province. Other interesting islands include Koh Phi Phi Don, Koh Bida Nok, Koh Bida Nai and Koh Mai Phai. The islands can be reached by ferry, speedboat or long-tail boat, mostly from Krabi town or from piers in Phuket.