In the title compound, C19H11BrFO2S, the dihedral angle between the plane of the naphtho-furan ring system [r.m.s. deviation = 0.043 (2) Å] and that of the 3-fluoro-benzene ring is 39.32 (8)°. In the crystal, mol-ecules are linked by C-H⋯O and C-Br⋯π [3.835 (1) Å] inter-actions into stacks along the c axis, forming a three-dimensional network. The F atom is disordered over two positions, with site-occupancy factors of 0.851 (3) and 0.149 (3).