The kinetics of permanganate oxidation of Fluorenone Hydrazone (FH) in both perchloric and sulfuric acid solutions was studied spectrophotometrically at a constant ionic strength of 1.5 mol dm-3 and at 20oC. In both acids, the reactions showed a first order dependence with respect to permanganate ion concentration, whereas the orders with respect to fluorenone hydrazone concentration were less than unity. The orders with respect to both perchloric and sulfuric acid concentrations were found to be fractional-second. Variation of either ionic strength or dielectric constant of the medium had no any significant effect on the oxidation rates. The reactions mechanism describing the kinetic data was proposed. In both acids, the main oxidation products of fluorenone hydrazone as confirmed by GC/MS analysis and FT-IR spectroscopy as the corresponding ketone (9H-fluorenone). Under comparable experimental conditions, the oxidation rate of fluorenone hydrazone in perchloric acid was slightly lower than that in sulfuric acid. The activation parameters of the second order rate constants have been evaluated and discussed.