上海市，简称“沪”，别称申城、沪上、魔都，是中华人民共和国直辖市、国家中心城市、超大城市、上海大都市圈核心城市，中华人民共和国国务院批复确定的中国国际经济、金融、贸易、航运、科技创新中心，中国历史文化名城。上海市总面积6340.5平方千米，辖16个区。2022年末，上海市常住人口为2475.89万人。

上海市位于中国华东地区，地处太平洋西岸，亚洲大陆东沿，是长江三角洲冲积平原的一部分，介于东经120°52′—122°12′，北纬30°40′—31°53′之间；上海市平均海拔高度2.19米，大金山岛为上海最高点，海拔高度103.7米，属亚热带季风气候，河网主要有流经市区的主干道黄浦江及其支流苏州河、川杨河、淀浦河等。

约6000年前，上海西部即已成陆。春秋战国时，上海是春申君的封邑，故别称申。晋朝时，因渔民创造捕鱼工具“扈”，江流入海处称“渎”，因此松江下游一带称为“扈渎”，后又改“沪”，故上海简称“沪”。元至元二十九年（1292年），把上海镇从华亭县划出，批准设立上海县，标志着上海市建城之始。上海历史代表文化有“吴越文化”“江南文化”“海派文化”等。

2022年，上海市实现地区生产总值（GDP）44652.80亿元，比上年下降0.2%。第一产业增加值96.95亿元，下降3.5%；第二产业增加值11458.43亿元，下降1.6%；第三产业增加值33097.42亿元，增长0.3%。

Shanghai is one of the four direct-administered municipalities of the People's Republic of China (PRC). The city is located on the southern estuary of the Yangtze River, with the Huangpu River flowing through it. The population of the city proper is the third most populous in the world, with 24.89 million inhabitants in 2021, while the urban area is the most populous in China, with 39,300,000 residents. As of 2018, the Greater Shanghai metropolitan area was estimated to produce a gross metropolitan product (nominal) of nearly 9.1 trillion RMB ($1.33 trillion). Shanghai is one of the world's major centers for finance, business and economics, research, science and technology, manufacturing, transportation, tourism, and culture, and the Port of Shanghai is the world's busiest container port.

Originally a fishing village and market town, Shanghai grew in importance in the 19th century due to both domestic and foreign trade and its favorable port location. The city was one of five treaty ports forced to open to European trade after the First Opium War. The Shanghai International Settlement and the French Concession were subsequently established. The city then flourished, becoming a primary commercial and financial hub of Asia in the 1930s. During the Second Sino-Japanese War, the city was the site of the major Battle of Shanghai. After the war, with the CCP takeover of the mainland in 1949, trade was limited to other socialist countries and the city's global influence declined.

By the 1990s, economic reforms introduced by Deng Xiaoping a decade earlier resulted in an intense redevelopment of the city, especially the Pudong New Area, aiding the return of finance and foreign investment. The city has since re-emerged as a hub for international trade and finance; it is the home of the Shanghai Stock Exchange, one of the largest stock exchanges in the world by market capitalization and the Shanghai Free-Trade Zone, the first free-trade zone in mainland China. Shanghai has been classified as an Alpha+ (global first-tier) city by the Globalization and World Cities Research Network. As of 2022, it is home to 12 companies of the Fortune Global 500 and is ranked 4th on the Global Financial Centres Index. The city is also a center for research and development and home to many highly ranked Double First-Class Universities. The Shanghai Metro, first opened in 1993, is the largest metro network in the world by route length.

Shanghai has been described as the "showpiece" of the booming economy of China. Featuring several architectural styles such as Art Deco and shikumen, the city is renowned for its Lujiazui skyline, museums and historic buildings including the City God Temple, Yu Garden, the China Pavilion and buildings along the Bund, which includes Oriental Pearl TV Tower. Shanghai is also known for its sugary cuisine, distinctive local language and vibrant international flair.