Vent cutter including a rotatable cutter with forward cutting edge for cutting tissue around a vent of poultry. A centering pin can be inside the cutter with a thickened end portion for insertion into the vent prior to cutting. A clamping sleeve can be inside of the cutter and surround the centering pin. The centering pin and the clamping sleeve can be movable with respect to each other and arranged to cooperate for clamping tissue of the poultry. The clamping sleeve can be movable with respect to the cutter.