To provide a railway vehicle capable of improving a strength of structure while assuring an expanse of a compartment space.

A side structure 5 has a lower frame 10 welded to an outer plate 9 and an upper frame 30 welded to the lower frame 10 while being crossed with it, so that it is possible to cause the lower frame 10 and the upper frame 30 to act as a lateral beam and a longitudinal beam so as to strengthen the outer plate 9 and assure the strength of the side structure 5. The upper beam channels 30a, 30b of the upper frame 30 are formed so as to have recesses 30d, and lower beam channels 10a, 10b of the lower frame 10 are fitted into the recesses 30d of the upper beam channels 30a, 30b, so that an overlapped state of the lower frame 10 and the upper frame 30 is increased in their thickness direction. Then, it is possible to make the thickness of the side structure 5 thin and assure a space of a compartment room. Thus, it is possible to improve the strength of vehicle structure 100 while assuring an expanse of the compartment room.

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