Two Royal Norwegian Navy ships and a class of patrol boats have been named Rapp, meaning quick.

• HNoMS Rap (1873) — is named Rapp, but with old spelling. This is the world's first torpedo boat.
• HNoMS Rapp (P981) - a Snøgg-class missile torpedo boat
• The Rapp-class torpedo boats.
  • HNoMS Rapp (P351) — The lead ship of the Rapp class.