Disclosed herein is a grilltop smoker box designed to sit atop a cooking grid of a barbecue grill. The grilltop smoker box has a base with an aperture and a cover that covers the base. The cover and base define a space or cavity for the accumulation of smoke. The cover also comprises a port that is positioned above the base for the exit of smoke, and an outlet for directing smoke to food on a cooking grid of a barbecue grill. Embodiments of the invention may comprise other optional features.
