In the title compound, C(15)H(12)BrN(3)O(2)S, the dihedral angle between the pyridine and benzene rings is 73.17 (19)°. The five-membered 1,3-thia-zolidine ring has an envelope conformation, with the S atom displaced by 0.196 (1) Å from the mean plane of the four other ring atoms. An intra-molecular C-H⋯N inter-action occurs. The crystal structure is stabil-ized by inter-molecular N-H⋯O and C-H⋯O hydrogen bonds and C-H⋯π inter-actions. In addition, a weak π-π stacking inter-action is also observed between the 1,3-thia-zolidine and pyridine rings [centroid-centroid distance = 3.805 (2) Å].