Killdozer, a portmanteau of kill and bulldozer, was the nickname given to a modified armored bulldozer used in a 2004 rampage by Marvin Heemeyer.
Killdozer may also refer to:
- "Killdozer!" (short story), a 1944 short story by Theodore Sturgeon
- Killdozer! (film), a 1974 ABC cult classic sci-fi film based on the story
- A vehicle used by Judge Dredd in The Cursed Earth story.
- Killdozer (band), an American noise rock band named after the film
- Killdozer, a ring name used by professional wrestler Matt Tremont