Changxing Island (simplified Chinese: 长兴岛; traditional Chinese: 長興島; pinyin: Chángxīng Dǎo) (Changsing) is a major island located in the eastern part of Bohai Sea, off the coast of Wafangdian, Dalian, Liaoning, China. It has a population of around 60,000.

Changxing Island is located in the eastern part of Bohai Sea, off the coast of Wafangdian, Dalian, Liaoning. It is the sixth largest island in Greater China and the largest island north of the Chongming Island on the Yangtze River. Its area is 252.5 square kilometers (97.5 sq mi), running about 30 kilometers (19 mi) east to west and 11 kilometers (6.8 mi) north to south.

Traditionally based on fishing and agriculture, its economy changed to distribution, industrial and resort development. It is an epicenter for the modernization of the People's Liberation Army Navy.

This industrial area consists of Changxing, Jiaoliu and three other islands, a total area of 350 square kilometers. It was made a Provincial Economic Development Zone by the Liaoning provincial government in January, 2002, and later in 2006, was made part of the "Five Points, One Line" industrial zone development plan. Its management committee was established by the Dalian municipal government in May, 2005.

There are already the following projects:

• Connection by a bridge to the mainland
• International golf course (Dalian Changxing Island Golf Resort, Japan)
• Limestone mining (Nittetsu Mining, Japan)
• Large seaport
• Large shipbuilding (STX Corporation, Korea)
• Oxygen plant (Taiyo Nippon Sanso Corporation, Japan)
• Petrochemical complex
• Wind power station

• China National and Provincial Economic and Technological Development Zones

• Dalian Changxing Island Seaport Industrial Area official website