The Wan Chai District (Chinese: 灣仔區, literally "Cove District") is one of the 18 districts of Hong Kong, located in the north of Hong Kong island. It had a population of 167,146 in 2001. The district has the second most educated residents with the highest income, the second lowest population and the third oldest residents, and is also the only district without any public housing estates. It is also affluent, with one in five persons having liquid assets of more than 1 million HKD.

The area known as "Wan Chai" often includes the area surrounding Tonnochy Road and the MTR station of the same name, which is located between Admiralty on the west and Causeway Bay on the east. "Wan Chai North", where the Hong Kong Convention and Exhibition Centre is located, refers to the area north of Gloucester Road, reclaimed from the sea after the 1970s. It is a cluster of high rise office towers and hotels.

The broader administrative "Wan Chai District" includes the areas of Wan Chai, Wan Chai North, Causeway Bay, Happy Valley, Jardine's Lookout, Stubbs Road, Wong Nai Chung Gap and Tai Hang.

Wan Chai (/ˌwɑːn ˈtʃaɪ/ Chinese: 灣仔) is a metropolitan area situated at the western part of the Wan Chai District on the northern shore of Hong Kong Island, in Hong Kong. Its other boundaries are Canal Road to the east, Arsenal Street to the west and Bowen Road to the south. The area north of Gloucester Road is often called Wan Chai North. Wan Chai is one of the busiest commercial areas in Hong Kong with many small and medium-sized companies. Wan Chai North features office towers, parks, hotels and an international conference and exhibition centre. As one of the first areas developed in Hong Kong, the locale is densely populated yet with noticeable residential zones facing urban decay. Arousing considerable public concern, the government has undertaken several urban renewal projects in recent years. There are many unique buildings and skyscrapers, most notably the Hong Kong Convention and Exhibition Centre (HKCEC), Central Plaza and Hopewell Centre.

Wan Chai originally began as Ha Wan (下環), literally meaning "a bottom ring" or "lower circuit". As one of the earliest developed areas in Hong Kong. Central, Sheung Wan, Sai Wan and Wan Chai are collectively known as the four rings (四環) by the locals. Wan Chai literally means "a cove" in Cantonese, but the area itself is no longer a cove due to drastic city development and continual land reclamation.