Greenhalgh (/ˈɡriːnhælʃ, -hɒlʃ, -hældʒ, -hɔː(l)/) is a surname. Notable people with the surname include:

• A. H. Greenhalgh, Democratic assemblyman from Nevada
• Ben Greenhalgh (born 1992), English footballer
• Brian Greenhalgh (born 1947), English footballer
• Chris Greenhalgh (born 1963), British novelist
• Eric Greenhalgh (1910–1996), English cricketer
• George Greenhalgh (born circa 1890), inventor of oil filter in 1923 and founder of Purolator oil filters
• Harry Greenhalgh (1900–1982), English footballer
• Harwood Greenhalgh (1849–1922), English footballer
• Howard Greenhalgh (born 1963), music video director
• Jack Greenhalgh (1904–1971), American cinematographer
• James Greenhalgh (born 1975), New Zealand tennis player
• Joe Greenhalgh (born 1985), English cricketer
• John Greenhalgh (footballer) (1898–1987), English footballer
• John Greenhalgh (governor) (died 1651), of the Isle of Man
• Jimmy Greenhalgh (1923–2013), English football manager
• Karen Greenhalgh, American politician
• Laura Greenhalgh (born 1985), British rower
• Nick Greenhalgh (born 1989), rugby player
• Norman Greenhalgh (1914–1995), English footballer
• Paul Greenhalgh (born 1955), educator at University of East Anglia
• Ralph Greenhalgh (1899–1965), Australian footballer
• Robert Greenhalgh (born 1978), British sailor
• Sam Greenhalgh (1882–1955), English footballer
• Sean Greenhalgh (born 1982), Canadian lacrosse player
• Sean Greenhalgh (musician), drummer of American rock band "Clap Your Hands Say Yeah"
• Shaun Greenhalgh (born 1960), English art forger
• Stephen Greenhalgh, Baron Greenhalgh (born 1967), British businessman and politician
• Tom Greenhalgh (born 1956), English musician with the Mekons
• Trisha Greenhalgh (born 1959), British professor of primary health care
• Victor Greenhalgh (1900–1983), Australian sculptor

Fictional characters:

• Dot Greenhalgh, Coronation Street character of the 1960s

Variants

Greenall, Greenhalf /-hælf/, Greenhalge /-hældʒ/, Greenhall, Greenhaulgh /-hɔː/, Greenhaw, Greenhow.