Haller is a surname of English and German origin. It is the last name of:
- Albin Haller, French chemist
- Albrecht von Haller (1708–1777), Swiss anatomist and physiologist, also notable for his contributions to botany
- Albrecht von Haller (1758-1823), botanist, son of Albrecht von Haller senior
- Benoît Haller, French baroque singer and conductor of La Chapelle Rhénane
- Berthold Haller, Swiss educator, preacher and church reformer
- Frank Haller, American boxer
- Gottlieb Emmanuel von Haller (1735-1786), botanist, son of Albrecht von Haller senior
- Granville O. Haller, American Civil War officer and Seattle businessman
- Harry Haller, the subject of Hermann Hesse's Steppenwolf (novel)
- Helmut Haller, West German footballer
- Józef Haller de Hallenburg, Polish general
- Karl Ludwig von Haller, Swiss jurist and author
- Kevin Haller, Canadian hockey player
- Paul Haller Roshi, Buddhist teacher and abbot
- Dr. Rene Haller
- Salomé Haller, French opera singer
- Stanisław Haller, Polish general, Józef's cousin
- Theodore Haller, Seattle businessman and son of G. O. Haller
- Tom Haller, former major league baseball player
- Wilhelm Haller, South German business and social entrepreneur