Hong Kong Pavilion of Expo 2010, Exhibition pavilion at World Expo Site, Shanghai, China.

The Hong Kong Pavilion was an exhibition building at the Shanghai World Expo 2010 site. Its ceiling and floor featured reflective membranes that created an optical illusion of expanded space.

Hong Kong's government was invited in August 2007 to take part in Expo 2010 and was given a 600-square-metre plot in Zone A, southwest of the China Pavilion. A February 2008 open design competition drew 80 entries; on 14 April 2008 the winning scheme, "Infinite Space" by Chan Wai-ching and Sze Ki-shan, was chosen. Construction by Gammon began on 10 April 2009 and the main structure was finished that October; Chief Executive Donald Tsang opened the pavilion on 1 May 2010.

The pavilion's three floors were themed on connections: the ground floor on links with mainland China and the world, the middle floor on ideas, information and diversity, and the top floor on nature. The middle level had a glass curtain wall and four glass columns presenting Hong Kong's cultural programmes, free flow of information, Charles Kao and the International Finance Centre. Visitors could design their own Hong Kong banknote in an interactive game.

The pavilion stood on a roughly 600-square-metre plot in Zone A, southwest of the China Pavilion, and its three levels were linked by ramps, a mirrored corridor and an elevated walkway with a viewing platform. It was built to receive about 7,000 visitors a day but drew over 2 million in total, averaging 11,000 daily. The structure was dismantled after the expo closed on 31 October 2010.

The pavilion's middle floor was fully glazed and transparent, a design by Chan Wai-ching and Sze Ki-shan chosen from 80 entries in a 2008 competition. It symbolized Hong Kong's open, free and transparent character. The top floor held a woodland and a wetland with 40 shrub and wetland species, including banyan and camphor trees.