•
Al Harker (1910–2006), American soccer player •
Alfred Harker (petrologist) (1859–1939), English geologist and petrologist •
Billy Harker (1910–1973), English footballer •
Caroline Harker (born 1966), English actress •
Charles Garrison Harker (1837–1864), Brigadier General of the Union Army in the American Civil War •
Chris Harker, Representative for Oregon's House District 34 •
Cyril Harker (1899–1970), New Zealand politician •
Donald Harker, Archbishop of the Anglican Diocese of George in South Africa •
F. Flaxington Harker (1876–1936), American composer •
George R. Harker, author and self-styled "cyberspace philosopher" •
Gordon Harker (1885–1967), English film actor •
Harry Harker (1887–1961), Australian footballer •
Howard Harker, World War I flying ace •
John Harker, former CEO of InFocus •
Margaret Harker (1920–2013), British photographer and historian of photography •
Oswald Allen Harker, (1886–1968), Acting Director General of MI5 from 1940 to 1941 •
Patrick T. Harker, President of the
University of Delaware •
Skouson Harker (born 1977), Canadian basketball player •
Susannah Harker (born 1965), English actress •
Wiley Harker, actor, Crane Tolliver in the soap opera
General Hospital •
William Harker (1819–1905), wool merchant, banker and Liberal politician who represented Ripon •
William Harker (slave trader), Maryland, U.S. ==Fictional characters==