Henry IV may refer to:

• Henry IV, Holy Roman Emperor, the first monarch styled as King of the Romans, signifying he had not yet been anointed and crowned by the Pope
• Henry IV of England
• Henry IV of France
• Henry IV of Castile
• Henry IV, Duke of Breslau

or plays by William Shakespeare:

• Henry IV, part 1
• Henry IV, part 2

or a play by Luigi Pirandello:

• Enrico IV

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