Hiller may refer to:
- Hiller, Pennsylvania
- Hiller Aircraft Corporation:
- Hiller Hornet
- Hiller Flying Platform
- Tanner-Hiller Airport
- Hiller Aviation Museum
- Hiller X-18
- Fairchild Hiller FH-227
- YH-32 Hornet
Or the following people:
- Arthur Hiller, Canadian film director
- Arthur Hiller (1881–1941), German football player
- Chuck Hiller (1934–2004), former baseball player
- Ferdinand Hiller (1811–1885), German composer (born Ferdinand Hildesheim)
- Friedrich Adam Hiller (c. 1767-1812), German composer, son of Johann Adam Hiller
- Holger Hiller, German musician
- István Hiller, Hungarian politician
- Jim Hiller, ice hockey coach and retired player
- Johann Adam Hiller (1728–1804), German composer
- Johann von Hiller (1754–1819), Austrian general
- John Hiller, former baseball pitcher
- Jonas Hiller, ice hockey goalkeeper
- Lejaren Hiller (born 1924), American composer
- Marius Hiller (1892–1964), German football player
- Scott Hiller, lacrosse coach
- Stanley Hiller (1924–2006), one of the early developers of the helicopter
- Wendy Hiller (1912–2003), English actress