In the title compound, C(16)H(13)NO(3)S, the plane of the amino-benzene ring makes a dihedral angle of 61.04 (6)° with the naphthalene ring system. Both ring systems form weak intra-molecular C-H⋯O hydrogen bonds with the sulfonate group. In the crystal structure, weak inter-molecular N-H⋯O hydrogen bonds and a C-H⋯π inter-action are observed.
