In the title compound, C(18)H(14)BrNO, the naphthalene ring system [maximum deviation = 0.015 (3) Å] forms a dihedral angle of 67.70 (10)° with the benzene ring. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds into C(4) chains propagating in [100]. A C-H⋯O inter-action reinforces the chain connectivity, generating an R(2) (1)(6) loop.