Abstract: A combination cemetery vase and flag holder adapter attaches to the mounting ring of an invertible type cemetery vase to hold the invertible vase in an upright or inverted position and has a laterally spaced smaller aperture for mounting a flagstaff and flag. The adapter has an elongate body with generally flat top and bottom surfaces, a larger aperture near a first end, and a smaller aperture near a second end. Depending lugs on the bottom surface surround the larger aperture and engage slots in the vase mounting ring secured to a gravestone surrounding an underground receptacle. Slots in the top surface and side wall of the larger aperture receive and detachably engage peripheral lugs on the base of the vase in an upright or inverted position. Slots in the top surface and side wall of the smaller aperture receive and detachably engage peripheral lugs of a collar at the bottom end of a flagstaff for supporting a flag a distance outwardly from the vase.