Abstract: A cap twister bottle opener having a pair of elongate clamp rings each having a transverse major axis and thick and thin circumferential portions surrounding a central opening. The rings are secured together by a pivot pin extending through the major axes and through the thin portion of one ring and the thick portion of the other ring. Cap-engaging teeth are provided on the interior surfaces of the thick portions of the rings for engagement with a cap inserted through the central openings. The bottle opener fits easily within the palm of the user and is squeezed to rotate the rings about the pin and move the teeth into engagement with the cap. The elongate shape of the rings facilitate rotation of the opener and held cap relative to the bottle to remove the cap from the bottle.