Haiyan may refer to:
Places Haiyan, Guangdong (), a town in Guangdong Haiyan County, Qinghai (), a county of Haibei Tibetan Autonomous Prefecture, Qinghai Haiyan County, Zhejiang (), a county of Jiaxing, Zhejiang
People with the given name Haiyan (, a feminine given name of Chinese origin: Gu Haiyan (born 1999), Chinese wheelchair fencer Qian Haiyan (; 1955–2013), Chinese female United Nations Civil Servant Xu Haiyan (; born 1984), Chinese female free style wrestler Ye Haiyan (; born 1975), female Chinese human rights activist Zhou Haiyan (; born 1990), Chinese female middle-distance runner
Other masculine given names with the same pronunciation but different Chinese characters: Hu Haiyan (; born 1956), male Chinese academic and president of Beijing Institute of Technology Ma Haiyan (; 1837–1900), Chinese male Muslim General of the Qing Dynasty
Other uses List of storms named Haiyan, the name of several tropical cyclones in the Northwest Pacific Ocean Typhoon Haiyan, an extremely powerful 2013 typhoon in the Philippines