Six sulfonamides derived from indanes and tetralines were synthesized. The human carbonic anhydrase isozymes hCA I and hCA II inhibition effects of the synthesized sulfonamides were determined. From these compounds, while N-(5,6-dimethoxy-2,3-dihydro-1H-inden-2-yl)methane sulfonamide showed the most potent inhibitory effect against hCA I (Ki=46 ± 5.4 µM, r(2) =0.978), N-(1,2,3,4-tetrahydronaphthalene-2-yl)methanesulfonamide was found to have the best inhibitory effect against hCA II (Ki=94 ± 7.6 µM, r(2) =0.982).