Amphoe Ko Pha-ngan, known globally for its monthly Full Moon Party, is a district of Surat Thani Province in southern Thailand.

It comprises the islands of Ko Pha-ngan and Ko Samui and several smaller ones, with an area of approximately 164 square kilometers.

The district has a population of about 15,000 permanent residents, primarily engaged in tourism, agriculture, and fishing.

Tourism is the dominant industry, with the Full Moon Party, held on Haad Rin Beach, being the most famous attraction.

Ko Pha-ngan has a rich history dating back to the 16th century, when it was ruled by the Kingdom of Ayutthaya.

It was later a part of the Rattanakosin Kingdom and became a district of Surat Thani Province in 1943.

The island has a diverse population, including Thai, Chinese, and Western expatriates, contributing to its vibrant cultural scene.

Ko Pha-ngan is renowned for its pristine beaches, coconut plantations, and lush rainforests, offering a perfect blend of natural beauty and lively nightlife.

The district is home to several important Buddhist temples, including Wat Phu Khao Noi and Wat Tham Seau, which attract both locals and visitors.

The island hosts the annual Ko Pha-ngan International Marathon, a popular sporting event that attracts participants from around the world.

Ko Pha-ngan is not currently home to any UNESCO World Heritage Sites.

The district is known for its nightlife and party culture, with numerous bars and nightclubs catering to a wide range of tastes.

Ko Pha-ngan's population has experienced significant growth in recent years, largely due to the influx of tourism.

The island has played a minor role in Thai national history but is a popular destination for both domestic and international tourists.

Ko Pha-ngan is known for its local traditions and festivals, including the Loi Krathong festival, where people release floating lanterns into the sea.