Hau is a surname. It may be a variant spelling of the Chinese surname Hao 郝, the Cantonese spelling of the Chinese surname Hou 侯, or a Danish surname. Notable individuals with the surname Hau include:

• Alyson Hau (born 1983), Hong Kong radio DJ
• Brian Hau (born 1982), Hong Kong singer-songwriter and author
• Carl Hau (1881–1926), German lawyer and murderer
• Caroline Hau (born 1969), Chinese-Filipino author and academic
• Hau Chi-keung (born 1956), Hong Kong businessman
• Eduard Hau (1807–1888), German painter and graphic artist
• Gretchen Hau, Puerto Rican politician and lawyer
• Johannes Hau (1771–1838), German painter
• Lene Hau (born 1959), Danish physicist
• Hau Lung-pin (born 1952), Taiwanese politician, Mayor of Taipei
• Hau Man-kin (born 1992), Hong Kong activist and politician
• Hau Pei-tsun (1919–2020), Chinese politician and military officer, Premier of the Republic of China
• Hau Shui-pui (born 1924), Hong Kong politician
• Hau Yung Sang (born 1917), Chinese-Taiwanese footballer
• Woldemar Hau (1816–1895), German painter

• Hau Latukefu (born 1976), Australian musician and radio host known as Hau
• Tuku Hau Tapuha (born 2001), New Zealand rugby league footballer
• Matt Te Hau (1912–1978), New Zealand Māori community leader
• Hao (surname)
• Hou (surname)

This page lists people with the surname Hau.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.