A railcar bogie (1) includes: a cross beam (4) configured to support a carbody (11); a pair of front and rear axles (5) sandwiching the cross beam (4) and respectively arranged in front of and behind the cross beam (4) in a railcar longitudinal direction so as to extend in a railcar width direction; bearings (7) respectively provided at both railcar width direction sides of each of the axles (5) and configured to rotatably support the axles (5); axle boxes (8) configured to respectively accommodate the bearings (7); side members (30) extending in the railcar longitudinal direction so as to respectively support both railcar width direction end portions (4a) of the cross beam (4) and each including both railcar longitudinal direction end portions (30c) respectively supported by the axle boxes (8); contact members (33) respectively provided at both railcar width direction end portions (4a) of the cross beam (4) and respectively disposed on railcar longitudinal direction middle portions (30a) of the side members (30) so as not to be fixed to the side members (30) in an upper-lower direction; and supporting members (31) respectively provided at the axle boxes (8) and respectively supporting the railcar longitudinal direction end portions (30c) of the side members (30).
