Ernst Haas
Ernst Haas is the name of the following people:
- Ernst Haas (Indologist) (1835–1882), German Indologist, professor of Sanskrit at University College London
- Ernst Haas (politician) (1901–1979), German lawyer and politician (SPD)
- Ernst Haas (rower) , Swiss rower
- Ernst Haas (photographer) (1921–1986), Austrian-American photographer and author
- Ernst B. Haas (1924–2003), American political scientist
- Ernst Otto Haas (1912–1984), German politician (CDU)