A simple, rapid and sensitive spectrophotometric method for the indirect determination of trace amounts of chromium(VI) is described. The nitrite generated by the oxidation of hydroxylamine with chromium(VI) is used to diazotize p-aminophenol (PMP). The diazonium salt formed is coupled with isatin (IS) or isonipecotamide (ISO) or frusemide (FRU) in an alkaline medium to form azo dye showing absorption maxima at 524 or 533 or 558 nm respectively. Chromium(III) is determined after it is oxidized to Cr(VI) by bromine water. The range of linearity for PMP – IS, PMP-ISO and PMP-FRU couples are 0.02- 0.6 μg mL^-1, 0.04-2.0 μg mL^-1 and 0.4-2.0 μg mL^-1of chromium respectively. The molar absorptivity, Sandell sensitivity for each system were calculated. The developed method is successfully applied to the determination of chromium in water samples, soil samples and dietary supplement.