Piracy Act is a stock short title used for legislation in the United Kingdom relating to piracy.

The Bill for an Act with this short title may have been known as a Piracy Bill during its passage through Parliament.

• The Piracy Act 1670 (22 & 23 Cha. 2. c. 11)
• The Piracy Act 1698
• The Piracy Act 1717
• The Piracy Act 1721
• The Piracy Act 1744 (18 Geo. 2. c. 30)
• The Piracy Act 1837
• The Piracy Act 1850 (13 & 14 Vict. c. 26)

• Acts of grace (piracy)
• List of short titles
• Offences at Sea Act 1536