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
Bernard Haber (1920–1959), New York assemblyman
Brett Haber, American sportscaster
Eitan Haber (born 1940), Israeli journalist
Fritz Haber (1868–1934), German chemist and Nobel Prize winner
Heinz Haber (1913–1990), German physicist and science writer
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, rabbi
Yvonne Haber, Australian architect