Lieber is a surname. Notable people with the surname include:
Charles M. Lieber, professor of chemistry at Harvard University
Ernst Maria Lieber, German politician
Francis Lieber, jurist, author of the Lieber Code
Jeffrey Lieber, screenwriter
Jon Lieber, baseball player
Larry Lieber, comic book writer
Lillian Rosanoff Lieber, mathematician/author
Maxim Lieber, American literary agent and communist spy in the 1930s
Richard Lieber, conservationist
Rochelle Lieber, linguist
Stan Lee (born Lieber), comic book writer
