To provide a transport tray capable of supporting an object to be transported under the condition of a high impact resistance.

When the trays (100) are stacked on one another while alternately changing their mutual directions at 180 degrees, a rear face of a part of a valley bottom portion (101) of the tray on the upper side abuts against each plateaus portion (113) of the tray on the lower side, which is hatched in a downward-sloping manner, in each support chamber (116). Further, a part of a rear face of each lake bottom portion (110) of the tray on the upper side abuts against a part of a plain portion (106), and a gap between the trays is defined. A crosshatched portion on a rear face of each slanting surface (109) of the tray on the upper side abuts against a crosshatched portion at a lower edge of an outer periphery of a light-transmitting plate (200) set in the support chamber of the tray on the lower side, and the light-transmitting plate is supported without dropping out from the support chamber during transport.