A range image sensor comprising a plurality of range sensors (P A1 to P AM; P B1 to P BN) disposed in a one-dimensional direction, wherein each of the plurality of range sensors comprises: a charge-generating region generating charges in accordance with incident light; a first and a second signal charge-accumulating regions (FD1, FD2) disposed away from the charge-generating region to sandwich the charge-generating region in the one-dimensional direction, and accumulating the charges generated in the charge-generating region as signal charges; a first transfer electrode disposed between the first signal charge-accumulating region and the charge-generating region and configured to allow the charges generated in the charge-generating region to flow into the first signal charge-accumulating region as the signal charges in accordance with a first transfer signal; and a second transfer electrode disposed between the second signal charge-accumulating region and the charge-generating region and configured to allow the charges generated in the charge-generating region to flow into the second signal charge-accumulating region as the signal charges in accordance with a second transfer signal different in phase from the first transfer signal, characterized in that in any three of the range sensors consecutively aligned in the one-dimensional direction, two first signal charge-accumulating regions of different range sensors or two second signal charge-accumulating regions of different range sensors are adjacent to each other in the one-dimensional direction in a range sensor positioned in a center of the three range sensors and a range sensor positioned closer to one side of the one-dimensional direction than the range sensor positioned in the center of the three range sensors, and two first signal charge-accumulating region and the second signal charge-accumulating region of different range sensors are adjacent to each other in the one-dimensional direction in the range sensor positioned in the center of the three range sensors and a range sensor positioned closer to an another side of the one-dimensional direction than the range sensor positioned in the center of the three range sensors. a charge-generating region generating charges in accordance with incident light; a first and a second signal charge-accumulating regions (FD1, FD2) disposed away from the charge-generating region to sandwich the charge-generating region in the one-dimensional direction, and accumulating the charges generated in the charge-generating region as signal charges; a first transfer electrode disposed between the first signal charge-accumulating region and the charge-generating region and configured to allow the charges generated in the charge-generating region to flow into the first signal charge-accumulating region as the signal charges in accordance with a first transfer signal; and a second transfer electrode disposed between the second signal charge-accumulating region and the charge-generating region and configured to allow the charges generated in the charge-generating region to flow into the second signal charge-accumulating region as the signal charges in accordance with a second transfer signal different in phase from the first transfer signal, characterized in that in any three of the range sensors consecutively aligned in the one-dimensional direction, two first signal charge-accumulating regions of different range sensors or two second signal charge-accumulating regions of different range sensors are adjacent to each other in the one-dimensional direction in a range sensor positioned in a center of the three range sensors and a range sensor positioned closer to one side of the one-dimensional direction than the range sensor positioned in the center of the three range sensors, and two first signal charge-accumulating region and the second signal charge-accumulating region of different range sensors are adjacent to each other in the one-dimensional direction in the range sensor positioned in the center of the three range sensors and a range sensor positioned closer to an another side of the one-dimensional direction than the range sensor positioned in the center of the three range sensors.