The saturated vapor pressures were measured for samples of mole fraction purity of 99.98 % hexanal, 2-methylcyclohexane, and 2-cyclohexen-1-one over wide temperature ranges by comparative ebulliometry. Measurements were made over the temperature range of (322.27 to 402.17) K for hexanal, (338.76 to 436.94) K for 2-methylcyclohexanone, and (350.40 to 445.00) K for 2-cyclohexen-1-one, respectively. The experimental data were correlated, and overall measures of data reproducibility are given. The results are compared with literature data.