To provide a roof tile that is suitable for the promotion of lightweightiness in a tiled roof, ease of execution and excellent in strength against load and, what is more, inexpensively manufacturable.

Two side overhang parts 11 and 11 ranging from an eaves side end 10a to a position short of a ridge side end 10b are integrally formed at both sides of a section arched body part 10. In this body part 10, width and height at the side of an outside surface of the ridge side end 10b are set to be smaller than those of D and H at the side of an inner surface of the eaves side end 10a, and its apex is provided with two tile locking holes 12a and 12b, therefore in these side overhang parts 11 and 11, their side edges 11a and 11a are gradually widened toward the ridge side end 10b from the eaves side end 10a almost in parallel with each other, and thus an end face of the widened side forms a contact part 13.