Lieber is a surname. Notable people with the surname include:
Clara Lieber (1902–1982), an American chemist Charles M. Lieber (born 1959), professor of chemistry at Harvard University Ernst Maria Lieber (1838–1902), German politician Francis Lieber (1800–1872), jurist, author of the Lieber Code Jeffrey Lieber, screenwriter Jon Lieber (born 1970), baseball player Larry Lieber (born 1931), comic book writer Lillian Rosanoff Lieber (1886–1986), mathematician and author Maxim Lieber (1897–1993), American literary agent and communist spy in the 1930s Michael Lieber, British actor Moriz Lieber (1790–1860), German politician and publisher Richard Lieber (1869–1944), conservationist Rochelle Lieber, linguist Stan Lee (born Stanley Lieber) (1922–2018), comic book writer
See also Leiber Jerry Leiber and Mike Stoller, American record producers and songwriters