Cracker

Cracker may refer to:

Cracker (band), an American alternative rock band
Crackers ( biscuits), a biscuit -like pastry
Cracker ( disc cracker), an instrument to break up the clippings when Maishäckseln
A curse from the African American English for whites
In chemical engineering a system for cracking
In the computer field Crack (software), a computer program for the removal of copy protection
Cracker ( computer security ), a person who enters without permission in foreign computer systems