To propose a chair arrangement structure for sufficiently securing front visibility regardless of a physical constitution of a sitter, and easily securing a flight space in a passage part.

This chair arrangement structure is provided by respectively arranging chairs in multi-rows in the longitudinal direction and the lateral direction. The chairs 2, 2, etc. are arranged so that the respective chairs 2, 2, etc. belonging to a rear side lateral row Pr are positioned in an intermediate position of the respective chairs 2, 2, etc. belonging to a front side lateral row Pf. With such a constitution, a rear seat sitter is always positioned in the middle of front seat sitters, and can face forward from the position. For example, even if a physical constitution of the front sitter is large and even if a physical constitution of the rear sitter is small, front visibility of the rear sitter is always secured without being influenced by a difference in such a physical constitution. The movement of a person is also facilitated through a passage 3, by forming an unused space S functioning as the flight space by dislocation in the lateral direction between the chair 2 positioned on the side end of the front side lateral row Pf and the chair 2 positioned on the side end of the rear side lateral row Pr.