Haber is a surname of German origin. The meaning in old German is "oat". The cereal is now in German called Hafer. Notable people with this surname include:
Alan Haber, American student activist
Alessandro Haber, Italian actor, director, and singer
Alicia Haber (born 1946), Uruguayan historian, art critic, curator, and teacher
Bernard Haber (1920–1959), American politician from New York
Brett Haber, American sportscaster
Daniel A. Haber, French oncologist
Daniel Haber (soccer) (born 1992), Canadian soccer player
Eitan Haber (1940–2020), Israeli journalist
Fritz Haber (1868–1934), German chemist and Nobel Prize winner
Heinz Haber (1913–1990), German physicist and science writer
Howard E. Haber (born 1952), American physicist
James Haber (born 1943), American biochemist
Justin Haber (born 1981), Maltese footballer
Marco Haber (born 1971), German footballer
Marcus Haber (born 1989), Canadian soccer player
Peter Haber (born 1952), Swedish actor
Ralf Haber (born 1962), German hammer thrower
Shamai Haber (1922–1995), sculptor
Yaacov Haber, American rabbi
Yvonne Haber, Australian architect