.38 Caliber

.38 Caliber may refer to:


 * .38 Short Colt
 * .38 Long Colt
 * .38 S&W (.38 Colt New Police, .38 Super Police)
 * .38 Special (9 x 29mmR)
 * .38 ACP and .38 Super (9 x 23mmSR)