The SIG Sauer P365 is a striker-fired subcompact semi-automatic pistol manufactured by SIG Sauer, intended for everyday carry. It is offered with Tritium XRAY3 Day/Night Sights and two 10-round magazines; one flush fit and the other with an extended finger tab, and a stainless steel frame with polymer grip module. It is primarily chambered in 9×19mm Parabellum and is rated for +P ammunition while utilizing offset double-stack magazines. A variant chambered in .380 ACP was introduced in February 2022. The P365, which replaced the P290RS, is produced in Newington, New Hampshire. In both 2018 and 2019, it was the best selling handgun in the United States.

In American English, a pocket pistol is any small, pocket-sized semi-automatic pistol, and is suitable for concealed carry in a pocket or a similar small space.