An article transport apparatus comprising: a plurality of supports for supporting an article (C); a supporting rotator that can be rotated about a single main shaft (A) and rotatably supports the supports at a plurality of positions located at an equal distance from the main shaft (A) in a radial direction and arranged at equal intervals in a circumferential direction; a driving portion for rotating the supporting rotator ; an attitude maintenance mechanism for keeping the plurality of supports in a constant attitude irrespective of a phase of the supporting rotator ; an article carry-in portion for carrying an article (C) into the support located at a first position (P1) in the circumferential direction; and an article carry-out portion for carrying an article (C) out of the support located at a second position (P2) separate from the first position (P1) in the circumferential direction, wherein the attitude maintenance mechanism includes: a fixed gear that is fixed to a non-rotating member for rotatably supporting the supporting rotator and is concentric with the main shaft (A); a movable gear that is axially rotatably supported by the supporting rotator and is revolved together with the supporting rotator in a state of meshing with the fixed gear ; a driving member that is coupled to the movable gear to be axially rotated together with the movable gear ; characterized in that the attitude maintenance mechanism further includes driven members that are coupled to rotation shafts of the plurality of supports ; and a drive transmission member that is wound around the driving member and the driven members . a plurality of supports for supporting an article (C); a supporting rotator that can be rotated about a single main shaft (A) and rotatably supports the supports at a plurality of positions located at an equal distance from the main shaft (A) in a radial direction and arranged at equal intervals in a circumferential direction; a driving portion for rotating the supporting rotator ; an attitude maintenance mechanism for keeping the plurality of supports in a constant attitude irrespective of a phase of the supporting rotator ; an article carry-in portion for carrying an article (C) into the support located at a first position (P1) in the circumferential direction; and an article carry-out portion for carrying an article (C) out of the support located at a second position (P2) separate from the first position (P1) in the circumferential direction, wherein the attitude maintenance mechanism includes: a fixed gear that is fixed to a non-rotating member for rotatably supporting the supporting rotator and is concentric with the main shaft (A); a movable gear that is axially rotatably supported by the supporting rotator and is revolved together with the supporting rotator in a state of meshing with the fixed gear ; a driving member that is coupled to the movable gear to be axially rotated together with the movable gear ; characterized in that the attitude maintenance mechanism further includes driven members that are coupled to rotation shafts of the plurality of supports ; and a drive transmission member that is wound around the driving member and the driven members . <EOS>