Flag of Hong Kong
| Use | Civil and state flag, civil and state ensign |
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| Proportion | 2:3 |
| Adopted | Approved on 4 April 1990 by the National People's Congress; first flown on 1 July 1997 |
| Design | A stylised, white, five-petal Bauhinia flower in the centre of a red field |
| Designed by | Tao Ho |
| Regional flag of the Hong Kong Special Administrative Region of the People's Republic of China | |||||||||||||
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| Traditional Chinese | 中華人民共和國香港特別行政區區旗 | ||||||||||||
| Simplified Chinese | 中华人民共和国香港特别行政区区旗 | ||||||||||||
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The Regional Flag of the Hong Kong Special Administrative Region of the People's Republic of China depicts a white stylised five-petal Hong Kong orchid tree (Bauhinia × blakeana) flower in the centre of a Chinese red field. Its design is enshrined in Hong Kong's Basic Law, the territory's constitutional document, and regulations regarding its use, prohibition of use, desecration, and manufacture are stated in the Regional Flag and Regional Emblem Ordinance.
The original design of the flag of Hong Kong was unveiled on 4 April 1990 at the Third Session of the Seventh National People's Congress. The current design was approved on 10 August 1996 at the Fourth Plenum of the Preparatory Committee of the Hong Kong Special Administrative Region. The use of the flag is regulated by laws passed by the 58th executive meeting of the State Council held in Beijing. The flag was officially adopted and hoisted on 1 July 1997, during the handover ceremony marking the handover from the United Kingdom back to China.
A variant of the flag known as the Black Bauhinia has been used by anti-Chinese government protesters in Hong Kong, particularly during the 2019–2020 Hong Kong protests. In contrast, pro-government supporters often display the Chinese and Hong Kong flags.