A rear vehicle body structure includes right/left side rear upper side members having ends respectively connected to right/left side center pillar members disposed at right/left sides along a width direction of a vehicle as well as being formed to extend along a height direction of a vehicle and a center pillar cross reinforcement member formed to extend along the width direction to connect the right/left side center pillar members, and disposed at the right/left sides along the width direction. A rear upper cross member is formed to extend along the width direction to connect the right/left side rear upper side members.