HMS P33

Two ships of the Royal Navy have been named HMS P33.

• HMS P33 (1916), a P-class patrol boat launched in 1916 and sold in 1921.
• HMS P33 (1941), a U-class submarine launched in January 1941 and sunk in August 1941.

• Colledge, J. J.; Warlow, Ben (2006) [1969]. Ships of the Royal Navy: The Complete Record of All Fighting Ships of the Royal Navy from the 15th Century to the Present (3rd Rev ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8. OCLC 67375475.