A bottle container with a handle comprising: a bottle body; and a handle member mounted on the bottle body, wherein a mounting projecting portion which forms a polygonal cross-sectional shape is provided so as to project from the bottle body, and the handle member is provided with a mounting hole which forms a substantially rectangular cross-sectional shape having a pair of long side portions and a pair of short side portions and which allows the mounting projecting portion to be inserted thereinto, wherein an outer peripheral edge of the polygon formed by the cross-section of the mounting projecting portion is provided with a pair of lateral pressure-contacting portions which extend along a central axis of the bottle body, and a pair of axial pressure-contacting portions which extend in a direction orthogonal to the central axis, wherein the mounting projecting portion further comprising four facing oblique side portions which connect the lateral pressure-contacting portions and the axial pressure contacting portions and are pairwise parallel to each other, characterized in that a distance between the pair of facing long side portions of the mounting hole is set to be greater than a distance between a pair of the oblique side portions of the mounting projecting portion facing each other, the mounting hole is configured so that the mounting projecting portion is capable of being inserted into the mounting hole at a position that the pair of long side portions and the pair of short side portions of the mounting hole face the four oblique side portions of the mounting projecting portion, the handle member is configured to be rotatable relative to the bottle body in a state that.the mounting projecting portion is inserted into the mounting hole, and wherein the handle member is mounted on the bottle body in a state where the pair of short side portions of the mounting hole are brought into pressure contact with the pair of axial pressure-contacting portions and in a state where the pair of long side portions of the mounting hole are brought into pressure contact with the pair of lateral pressure-contacting portions. a bottle body; and a handle member mounted on the bottle body, wherein a mounting projecting portion which forms a polygonal cross-sectional shape is provided so as to project from the bottle body, and the handle member is provided with a mounting hole which forms a substantially rectangular cross-sectional shape having a pair of long side portions and a pair of short side portions and which allows the mounting projecting portion to be inserted thereinto, wherein an outer peripheral edge of the polygon formed by the cross-section of the mounting projecting portion is provided with a pair of lateral pressure-contacting portions which extend along a central axis of the bottle body, and a pair of axial pressure-contacting portions which extend in a direction orthogonal to the central axis, wherein the mounting projecting portion further comprising four facing oblique side portions which connect the lateral pressure-contacting portions and the axial pressure contacting portions and are pairwise parallel to each other, characterized in that a distance between the pair of facing long side portions of the mounting hole is set to be greater than a distance between a pair of the oblique side portions of the mounting projecting portion facing each other, the mounting hole is configured so that the mounting projecting portion is capable of being inserted into the mounting hole at a position that the pair of long side portions and the pair of short side portions of the mounting hole face the four oblique side portions of the mounting projecting portion, the handle member is configured to be rotatable relative to the bottle body in a state that.the mounting projecting portion is inserted into the mounting hole, and wherein the handle member is mounted on the bottle body in a state where the pair of short side portions of the mounting hole are brought into pressure contact with the pair of axial pressure-contacting portions and in a state where the pair of long side portions of the mounting hole are brought into pressure contact with the pair of lateral pressure-contacting portions.