C.H.U.D. is a 1984 American horror film produced by Andrew Bonime, and directed by Douglas Cheek with Peter Stein as the director of photography and William Bilowit as production designer. The cast includes Daniel Stern and John Heard and features early appearances by both John Goodman and Jay Thomas as police officers. It was followed in 1989 by C.H.U.D. II: Bud the C.H.U.D..

CHUD or chud could refer to:

• Chud (literally in Slavic "strange", "wondrous" people), a Russian and Ukrainian word for ancient Estonians, Vepsians, Votes, Izhorians and Baltic Finns in general
• Chud Lake
  • Battle of Chud Lake
• CHUD Tools, a set of software tools to measure software performance on Mac OS X

Chud or Chude (, in Finnic languages: tshuudi, tšuudi, cudit) is a term historically applied in the early Russian annals to several Finnic peoples in the area of what is now Estonia, Karelia and Northwestern Russia.