QF 4 inch gun

QF 4 inch gun can refer to:


 * QF 4 inch naval gun Mk I - III
 * QF 4 inch Mk V naval gun
 * QF 4 inch naval gun Mk IV, XII, XXII
 * QF 4 inch Mk XVI naval gun
 * QF 4 inch Mk XIX naval gun
 * QF 4 inch naval gun Mk XXIII