Federal Rules of Civil Procedure:
These rules govern the conduct of all civil actions brought in Federal district courts. While they do not apply to suits in state courts, the rules of many states have been closely modeled on these provisions.

Federal Rules of Criminal Procedure:
These rules govern the conduct of all criminal proceedings brought in Federal courts.

Federal Rules of Evidence:
These rules govern the introduction of evidence in proceedings, both civil and criminal, in Federal courts. While they do not apply to suits in state courts, the rules of many states have been closely modeled on these provisions.