Ko Phi Phi Lee is a small, uninhabited limestone island in the Phi Phi Islands, located in the Andaman Sea in southern Thailand. Unlike its larger neighbour Ko Phi Phi Don, it has no permanent residents and is entirely protected as part of a national marine environment due to its fragile ecosystems and dramatic natural beauty.

The island is most famous for its steep limestone cliffs, emerald lagoons, and sheltered bays, especially Maya Bay and Pileh Lagoon. These areas are surrounded by towering rock formations and clear turquoise water, creating one of the most recognisable seascapes in Southeast Asia. Coral reefs and marine life thrive in the surrounding waters, making it a popular destination for snorkelling and boat tours.

Today, Ko Phi Phi Lee is carefully managed with strict visitor controls to protect its environment, particularly after periods of over-tourism. Access to some areas is periodically restricted to allow natural recovery. Despite these limits, it remains one of Thailand’s most iconic natural attractions, known globally for its cinematic scenery and pristine coastal landscapes.