STRUCTURAL MEMBER FOR VEHICLE

The collision resistance performance of a structural member is effectively improved while suppressing an unnecessary increase in mass of the structural member. The structural member includes a hollow member (1) and a tension member (12). The hollow member (1) forms a closed cross-sectional shape by a top sheet portion (10A), a pair of sidewall portions (10B) each continuous to each side of the top sheet portion (10A) in a width direction, and a bottom sheet portion (11) arranged to face the top sheet portion (10A). The tension member (12) is formed by a metal sheet extending along the width direction of the top sheet portion (10A) and being thinner than the sheet thickness of the hollow member, and connects inner surfaces of the pair of sidewall portions (10B) facing each other to each other to restrain the distance between the pair of sidewall portions (10B) from increasing.