A pressure vessel comprising: a vessel main body having a cylindrical straight body part, a first domed part and a second domed part, the first domed part including a first hemispherical portion, the second domed part including a second hemispherical portion, the first hemispherical portion and the second hemispherical portion having hemispherical shapes and being integrally formed at each end of the straight body part; a first reinforced section formed by winding reinforcing fibers around an outer circumferential surface of the first domed part such that the reinforcing fibers are interlaced with each other; a second reinforced section formed by winding the reinforcing fibers helically around an outer circumferential surface of the straight body part, continuously from the first reinforced section; and a third reinforced section formed by winding the reinforcing fibers around an outer circumferential surface of the second domed part such that the reinforcing fibers are interlaced with each other, continuously from the second reinforced section; wherein, as seen from a direction orthogonal to an axial direction of a longitudinal central axis of the vessel main body, the reinforcing fibers transition between being wound to be interlaced with each other at a winding angle (θ) with respect to the longitudinal central axis and being wound helically at the winding angle (θ); the pressure vessel being characterized in that the first domed part includes a first cylindrical portion protruding toward a first axial end of the longitudinal central axis of the vessel main body; the second domed part includes a second cylindrical portion protruding toward a second axial end of the central axis; and as seen from the direction orthogonal to the axial direction of the central axis, an angle, relative to the central axis, of an imaginary tangential line passing through a terminal end, on a side of the first hemispherical portion, of a first curved surface continuing from the first cylindrical portion to the first hemispherical portion is equal to or smaller than the winding angle, relative to the central axis, of the reinforcing fibers wound around the straight body part, and an angle, relative to the central axis, of an imaginary tangential line passing through a terminal end, on a side of the second hemispherical portion, of a second curved surface continuing from the second cylindrical portion to the second hemispherical portion is equal to or smaller than the winding angle. a vessel main body having a cylindrical straight body part, a first domed part and a second domed part, the first domed part including a first hemispherical portion, the second domed part including a second hemispherical portion, the first hemispherical portion and the second hemispherical portion having hemispherical shapes and being integrally formed at each end of the straight body part; a first reinforced section formed by winding reinforcing fibers around an outer circumferential surface of the first domed part such that the reinforcing fibers are interlaced with each other; a second reinforced section formed by winding the reinforcing fibers helically around an outer circumferential surface of the straight body part, continuously from the first reinforced section; and a third reinforced section formed by winding the reinforcing fibers around an outer circumferential surface of the second domed part such that the reinforcing fibers are interlaced with each other, continuously from the second reinforced section; wherein, as seen from a direction orthogonal to an axial direction of a longitudinal central axis of the vessel main body, the reinforcing fibers transition between being wound to be interlaced with each other at a winding angle (θ) with respect to the longitudinal central axis and being wound helically at the winding angle (θ); the pressure vessel being characterized in that the first domed part includes a first cylindrical portion protruding toward a first axial end of the longitudinal central axis of the vessel main body; the second domed part includes a second cylindrical portion protruding toward a second axial end of the central axis; and as seen from the direction orthogonal to the axial direction of the central axis, an angle, relative to the central axis, of an imaginary tangential line passing through a terminal end, on a side of the first hemispherical portion, of a first curved surface continuing from the first cylindrical portion to the first hemispherical portion is equal to or smaller than the winding angle, relative to the central axis, of the reinforcing fibers wound around the straight body part, and an angle, relative to the central axis, of an imaginary tangential line passing through a terminal end, on a side of the second hemispherical portion, of a second curved surface continuing from the second cylindrical portion to the second hemispherical portion is equal to or smaller than the winding angle.