The pepper-box revolver or simply pepperbox (also "pepper-pot", from its resemblance to the household pepper grinder) is a multiple-barrel repeating firearm that has three or more barrels grouped around a central axis.

It mostly appears in the form of a multi-shot handheld firearm. Pepperboxes exist in various firing mechanisms: matchlock, wheellock, flintlock, percussion, pinfire, rimfire and centerfire.

The pepperbox was invented in the 1830s and was mainly aimed at the civilian market. Its employment spread rapidly and was popular in the United States from the 1830s until the Civil War.