A thrust roller bearing (1) is equipped with: a synthetic resin upper case (100); a synthetic resin lower case (200); and a synthetic resin thrust roller bearing part (300) arranged between the upper and lower cases (100) and (200). The upper surface (304) of the thrust roller bearing part (300) is equipped with inside recessed parts (306) and outside recessed parts (307) formed in two rows, an inside row and an outside row, and a lubricating oil substance which fills these inside recessed parts (306) and outside recessed parts (307). The inside recessed parts (306) and the outside recessed parts (307) are arranged having a phase difference for which the angle theta1 = 6°.
