تنگهٔ تایوان (به چینی سنتی:台灣海峽، به چینی ساده: 台湾海峡، پینیین: Táiwān hǎixiá، وید جایلز: T’ai-wan Hai-hsia) یا تنگهٔ فُرمُز بخشی از آبهای اقیانوس آرام واقع در بین استان فوجیان در چین و جزیرهٔ تایوان (فُرمُز) است که دریای چین شرقی و دریای جنوبی چین را به یکدیگر متصل میسازد.
عرض این تنگه در باریکترین قسمت آن ۱۶۰ کیلومتر است و ژرفایی پیرامون ۷۰ متر دارد. جزایر پسکادور در این تنگه واقع شدهاند و تحت کنترل تایوان قرار دارند. از مهمترین بنادر واقع در این آبراه میتوان به بندر آموی در چین و کائو سیونگ در تایوان اشاره نمود. همچنین این ناحیه در یک منطقهٔ گردبادخیز قرار گرفته است.
تنگهٔ تایوان به نام تنگهٔ فُرمُز بهمعنای «زیبا» نیز شهره است و این نامی است که دریانوردان پرتغالی در سدهٔ شانزدهم بر آن نهادند. این تنگه هرچند امروزه نیز در غرب هنوز به نام اروپایی آن شناخته میشود اما چینیها و بیشتر غربیها عنوان تنگهٔ تایوان را برای نامیدن آن بهکار میبرند.
The Taiwan Strait, also known by other names, is a 180-kilometer (110 mi)-wide strait separating the island of Taiwan from mainland China. The strait is currently part of the South China Sea and connects to the East China Sea to the north. The narrowest part is 130 km (81 mi) wide.
Former names of the Taiwan Strait include the Formosa Strait or Strait of Formosa, from a dated name for Taiwan; the Strait of Fokien or Fujian, from the Chinese province forming the strait's western shore; and the Black Ditch, a calque of the strait's name in Hokkien and Hakka.
Current international agreement does not define the Taiwan Strait but places its waters within the South China Sea, whose northern limit runs from Cape Fugui (the northernmost point on Taiwan Island) to Niushan Island to the southernmost point of Pingtan Island and thence westward along the parallel 25° 24′ N. to the coast of Fujian Province.
The still-unapproved draft for a new edition of the IHO's Limits of Oceans and Seas does precisely define the Taiwan Strait, classifying it as part of the North Pacific Ocean. It makes the Taiwan Strait a body of water between the East and South China Seas and delimits it:
Both the People's Republic of China (PRC) on the mainland and the Republic of China (ROC) on Taiwan Island espouse a One-China Policy that considers the strait part of the exclusive economic zone of a single "China". In practice, a maritime border of control exists, known as the Cross-Strait Median (t 海峽中線, s 海峡中线, Hǎixiá Zhōngxiàn).
The entire strait is on Asia's continental shelf. It is almost entirely less than 150 m (490 ft) deep, with a short ravine of that depth off the south-west coast of Taiwan. As such, there are many islands in the strait. The largest and most important islands off the Fujianese coast are Xiamen & Gulangyu, Pingtan (the "Haitan" of the IHO delineation), Kinmen, and Matsu. The first three are controlled by the PRC; the last two by the ROC. Within the strait lie the Penghu or Pescadores, also controlled by the ROC. There is a major underwater bank 40–60 km (25–37 mi) north of the Penghu Islands.
The Strait mostly separated the Han culture of the Chinese mainland from Taiwan Island's aborigines for millennia, although the Hakka and Hoklo traded and migrated across it. A Fujianese shamaness named Lin Mo is said to have drowned in the strait while rescuing members of her family in the 10th century; by the 12th century, her story had given rise to the cult of "Mazu" still celebrated on both sides of the strait.
Early modern Taiwan was a haven by Chinese and Japanese pirates. European explorers, principally the Spanish and Dutch, also took advantage of the strait to establish forward bases for trade with the mainland during the Ming; the bases were also used for raiding both the Chinese coast and the trading ships of rival countries.
Widespread Chinese migration across the strait began in the late Ming. During the Qing conquest, Ming refugees fled to Taiwan. Zheng Chenggong (Koxinga) expelled the Dutch and established the Kingdom of Tungning in 1661, planning to launch a reconquest of the mainland in the name of the Southern Ming branches of the old imperial dynasty. Dorgon and the Kangxi Emperor were able to consolidate their control over southern mainland China; Koxinga found himself limited to raiding across the strait. His grandson Zheng Keshuang surrendered to the Qing after his admiral lost the 1683 Battle of the Penghu Islands in the middle of the strait.
The Manchu-led Qing Empire faced constant revolts among the Han, Hoklo, and Hakka on Taiwan over the next 200 years. They never exerted much control over the aboriginal tribes on the eastern half of the island, prompting international incidents and American and Japanese invasions when the natives massacred the survivors of shipwrecks.
Japan seized the Penghu Islands during the First Sino-Japanese War and gained control of Taiwan at its conclusion in 1895. Control of the eastern half of the strait was used to establish control of the southern Chinese coast during the Second World War. The strait protected Japanese bases and industry on Taiwan from Chinese attack and sabotage, but aerial warfare reached the island by 1943. The 1944 Taiwan Air Battle gave the United States Pacific Fleet air supremacy from its carrier groups and Philippine bases; subsequently, bombing was continuous until Japan's surrender in 1945.
During and after the Chinese Civil War, uprisings and peaceful dissent against the Nationalist government of the Republic of China were met with martial law and brutal repression now known as the "White Terror". The rapid advance of the Communist PLA in 1949 provoked the government's panicked retreat across the Taiwan Strait. The PLA's successful amphibious conquest of Hainan Island in 1950 suggested Taiwan would soon fall as well but the PRC's entrance into the Korean War in the autumn of that year provoked the United States into resuming its support of the Nationalists.
The US Seventh Fleet patrolled the strait both to protect the island from Communist assault and to prevent the Taiwanese from beginning international incidents through assaults on the mainland expected to be fruitless. Chinese assaults led to "Taiwan Strait Crises" in 1954 & 1955 and 1958 that were ended by threat of war with the US; Chiang Kai-shek's plans for China's reconquest were mostly abandoned after a failed landing at Magong in 1965. Hopes for immediate military reunification of China gave way to a One-China Policy espoused by both Chinas and the international community; most international recognition switched from the Republic of China to the People's Republic of China in the 1970s. A third Taiwan Strait Crisis occurred in 1995 & 1996 and cross-Strait relations remain strained, with a strengthening PRC economy also strengthening its military and deployments on the straits.
Fishermen have used the strait as a fishing resource since time immemorial. In the modern world, it hosts major shipping lanes.
As part of the People's Republic of China's National Expressway Plan, a tunnel, or possibly a bridge, was proposed in 2005 to link the city of Fuzhou with Taipei across the strait. If such an extreme construction were ever built, it would by far exceed the length of any man-made tunnel in the world today. Engineers in Beijing state that a tunnel is technically feasible. However, the Republic of China government in Taiwan has refused to open direct links out of concern for Taiwan's security and in fear that by doing so it would have to recognize the People's Republic of China's one-China policy, since China split into two in the Chinese Civil War and they still have an adversarial relationship.