Haase may refer to:
- Haase (car), a Veteran Era car make
- Barry Haase (born 1945), Australian politician
- Curt Haase (1881–1943), German soldier
- Ernie Haase, American tenor
- Friedrich Haase (1827–1911), German actor
- Friedrich Gottlob Haase (1808–1867), German classical scholar
- Helga Haase (1934–1989), speedskater
- Hugo Haase (1863–1919), German politician
- Jerod Haase (born 1974), American college basketball coach
- John Haase (1923–2006), German dentist and author
- Joshua Haase (born 1981), United States Marine
- Jürgen Haase (athlete) (born 1945), German Olympian runner
- Madeline Haase (born 1931), American artist
- Mandy Haase (born 1982), German hockey player
- Martin Haase (born 1962) German Esperantist and professor of linguistics
- Robin Haase (born 1987), Dutch tennis player
- Werner Haase (1900–1950), German professor of medicine and SS officer