An article transfer device for transferring two or more kinds of articles having different lengths in an article lateral direction which is perpendicular to an article transfer direction, comprising: a placement support portion that is provided to a base platform and that receives and supports an article to be transferred; a pair of clamp portions (18F, 18R) that are capable of being moved toward and away from each other between gripping positions for gripping the article to be transferred and releasing positions that are spaced apart wider than the gripping positions; a clamp actuator for moving the pair of clamp portions (18F, 18R) toward and away from each other; wherein the placement support portion includes a pair of divided placement support portions (17F, 7R) that separately receive and support both side portions, in the article lateral direction, of a bottom surface of the article to be transferred, wherein the pair of divided placement support portions (17F, 17R) are configured to be moved toward and away from each other within limits of a movable range defined in the article lateral direction and to face each other in close proximity when located at approach limit positions which are limit positions in the movable range that are closer to each other, wherein there are provided a placement support portion actuator for moving the pair of divided placement support portions (17F, 17R) toward and away from each other and a controller for controlling operations of the clamp actuator and the placement support portion actuator based on length information, in the article lateral direction, of the article to be transferred; wherein the pair of clamp portions (18F, 18R) are configured to be moved along the article transfer direction with respect to the placement support portion, characterized in that, each of the pair of divided placement support portions (17F, 17R) includes a plurality of rotary rollers which can rotate about laterally extending axes arranged along the article transfer direction, and that a roller actuator for drivingly rotating the plurality of rotary rollers is provided to each of the pair of divided placement support portions (17F, 17R) so as to be movable in unison therewith. a placement support portion that is provided to a base platform and that receives and supports an article to be transferred; a pair of clamp portions (18F, 18R) that are capable of being moved toward and away from each other between gripping positions for gripping the article to be transferred and releasing positions that are spaced apart wider than the gripping positions; a clamp actuator for moving the pair of clamp portions (18F, 18R) toward and away from each other; wherein the placement support portion includes a pair of divided placement support portions (17F, 7R) that separately receive and support both side portions, in the article lateral direction, of a bottom surface of the article to be transferred, wherein the pair of divided placement support portions (17F, 17R) are configured to be moved toward and away from each other within limits of a movable range defined in the article lateral direction and to face each other in close proximity when located at approach limit positions which are limit positions in the movable range that are closer to each other, wherein there are provided a placement support portion actuator for moving the pair of divided placement support portions (17F, 17R) toward and away from each other and a controller for controlling operations of the clamp actuator and the placement support portion actuator based on length information, in the article lateral direction, of the article to be transferred; wherein the pair of clamp portions (18F, 18R) are configured to be moved along the article transfer direction with respect to the placement support portion, characterized in that, each of the pair of divided placement support portions (17F, 17R) includes a plurality of rotary rollers which can rotate about laterally extending axes arranged along the article transfer direction, and that a roller actuator for drivingly rotating the plurality of rotary rollers is provided to each of the pair of divided placement support portions (17F, 17R) so as to be movable in unison therewith.