A head-mix swirl injector for gas torches. The swirl injector may include an injector body adapted to be disposed in a head of the torch. The injector body may define a swirl baffle, an injector orifice in fluid communication with the swirl baffle, and a mixing chamber in fluid communication with the injector orifice. The swirl injector may further include at least one gas port extending from the mixing chamber to an exterior of the injector body. The mixing chamber may have a larger diameter than the injector orifice.