In this study, new N-(1-arylethylidene)-N′-(4-arylthiazol-2-yl)hydrazine derivatives were synthesized and evaluated for their antituberculosis activity. The chemical structures of the compounds were elucidated by IR, NMR and FAB+-MS spectral data and Elemental Analyses. The initial screen was conducted against Mycobacterium tuberculosis H37Rv (ATCC 27294) in BACTEC 12B medium using the Microplate Alamar