A three-dimensional object printing apparatus , comprising: a head unit that includes a head and a curing unit , the head having an ejecting surface (F1) on which a nozzle (N) is provided, the head being configured to eject liquid from the nozzle toward a three-dimensional workpiece, the curing unit having an emitting surface (F2) from which energy for curing the liquid is emitted; and a movement mechanism that changes relative position and relative orientation of the workpiece and the head unit; wherein when a direction (c2) in which the head ejects the liquid is defined as an ejecting direction, the ejecting surface is located closer to an ejecting direction side, which is a side toward which the ejecting direction goes, than the emitting surface is, and wherein a plurality of nozzles (N) is provided along a nozzle-row axis on the ejecting surface, the movement mechanism includes a plurality of rotation axes that includes at least one rotation axis orientable to be parallel to the nozzle-row axis, among the at least one rotation axis orientable to be parallel to the nozzle-row axis, one rotation axis closest to the head unit is defined as a center rotation axis, and in a state in which the center rotation axis and the nozzle-row axis are parallel to each other, the emitting surface is located inside a virtual circle (C) having a center at the center rotation axis and having a radius equal to R, where R is defined as a distance between the center rotation axis and an edge of the ejecting surface that is most distant from the center rotation axis when the head is viewed in a direction of the nozzle-row axis. a head unit that includes a head and a curing unit , the head having an ejecting surface (F1) on which a nozzle (N) is provided, the head being configured to eject liquid from the nozzle toward a three-dimensional workpiece, the curing unit having an emitting surface (F2) from which energy for curing the liquid is emitted; and a movement mechanism that changes relative position and relative orientation of the workpiece and the head unit; wherein when a direction (c2) in which the head ejects the liquid is defined as an ejecting direction, the ejecting surface is located closer to an ejecting direction side, which is a side toward which the ejecting direction goes, than the emitting surface is, and wherein a plurality of nozzles (N) is provided along a nozzle-row axis on the ejecting surface, the movement mechanism includes a plurality of rotation axes that includes at least one rotation axis orientable to be parallel to the nozzle-row axis, among the at least one rotation axis orientable to be parallel to the nozzle-row axis, one rotation axis closest to the head unit is defined as a center rotation axis, and in a state in which the center rotation axis and the nozzle-row axis are parallel to each other, the emitting surface is located inside a virtual circle (C) having a center at the center rotation axis and having a radius equal to R, where R is defined as a distance between the center rotation axis and an edge of the ejecting surface that is most distant from the center rotation axis when the head is viewed in a direction of the nozzle-row axis. <EOS>