Nine vessels of the Royal Navy have been named HMS Porcupine, after the porcupine, a rodent belonging to the families Erethizontidae or Hystricidae.
HMS Porcupine (1746) was a 16-gun sloop purchased in 1746 and sold in 1763.
HMS Porcupine (1777) was a 24-gun post ship launched in 1777 and broken up in 1805.
HMS Porcupine was a 16-gun sloop purchased in Jamaica in 1777 and sold in 1788.
HMS Porcupine (1807) was a 22-gun post ship launched in 1807 and sold in 1816.
HMS Porcupine was to have been a 28-gun sixth rate; ordered in 1819, she was canceled in 1832.
HMS Porcupine (1844) was a wooden paddle wheel vessel sold in 1883.
HMS Porcupine (1895) was a Janus-class destroyer launched by Palmers in 1895 that served in home waters and was sold in 1920.
HMS Porcupine (G93) was a P-class destroyer launched in 1941 and torpedoed by U-602 in the Mediterranean in 1942.
HMS Porcupine was to have been a survey ship, renamed in 1967 as HMS Barracouta, but the order was cancelled in 1967.
