A combustor cooling panel that defines a circumference of a combustion gas passage for combustion gas to flow through from an upstream side (Su) to a downstream side (Sd) in an axial direction (Da) in which an axis (Ac) of a combustor extends, the combustor cooling panel comprising: an inner surface capable of coming in contact with the combustion gas; an outer surface facing the opposite side from the inner surface; and a first channel (61;71) and a second channel (81;81x) through which a cooling medium can flow, the first channel (61;71) and the second channel (81;81x) extending between the inner surface and the outer surface in a direction along the inner surface and the outer surface, at a constant distance from the inner surface in a thickness direction (Dt) that is a direction from the inner surface toward the outer surface, wherein, relative to an end zone (63;73) of the first channel (61;71) including an end thereof in a longitudinal direction, the second channel (81;81x) has an overlapping zone (82;82x) that overlaps the end zone (63;73) in an extension direction (De) of the end zone (63;73) by extending in a direction having a component of the extension direction (De) while being separated from the end zone (63;73) in a circumferential direction (Dc) intersecting the extension direction (De), and a non-overlapping zone (83;83x) that does not overlap the end zone (63;73) in the extension direction (De), wherein a first bent portion that is bent toward the end zone (63;73) in the circumferential direction (Dc) is formed in the second channel (81;81x), and wherein the second channel (81;81x) has a second bent portion that is formed in a zone inside the non-overlapping zone (83;83x) on the opposite side from the overlapping zone (82;82x) across the first bent portion, and that is bent toward the opposite side from bending of the first bent portion. an inner surface capable of coming in contact with the combustion gas; an outer surface facing the opposite side from the inner surface; and a first channel (61;71) and a second channel (81;81x) through which a cooling medium can flow, the first channel (61;71) and the second channel (81;81x) extending between the inner surface and the outer surface in a direction along the inner surface and the outer surface, at a constant distance from the inner surface in a thickness direction (Dt) that is a direction from the inner surface toward the outer surface, wherein, relative to an end zone (63;73) of the first channel (61;71) including an end thereof in a longitudinal direction, the second channel (81;81x) has an overlapping zone (82;82x) that overlaps the end zone (63;73) in an extension direction (De) of the end zone (63;73) by extending in a direction having a component of the extension direction (De) while being separated from the end zone (63;73) in a circumferential direction (Dc) intersecting the extension direction (De), and a non-overlapping zone (83;83x) that does not overlap the end zone (63;73) in the extension direction (De), wherein a first bent portion that is bent toward the end zone (63;73) in the circumferential direction (Dc) is formed in the second channel (81;81x), and wherein the second channel (81;81x) has a second bent portion that is formed in a zone inside the non-overlapping zone (83;83x) on the opposite side from the overlapping zone (82;82x) across the first bent portion, and that is bent toward the opposite side from bending of the first bent portion.