HMS Rorqual has been the name of two Royal Navy submarines. A rorqual is a type of whale:

• HMS Rorqual (N74), a Grampus-class submarine launched in 1936
• HMS Rorqual (S02), a Porpoise-class submarine launched in 1956

• Colledge, J. J.; Warlow, Ben (2006) [1969]. Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8.