Apparatus design and procedures are described for the determination of the vapor pressures of naturally occurring neon (natNe) and the pure isotopes 20Ne and 22Ne from their triple points (TP) to their normal boiling points (NBP). The data have been fitted to vapor-pressure equations with root-mean-square deviations of ± 2.5 to ± 4.7 N/m2 (± 0.019 to ± 0.035 mmHg). The TP pressures (P) and the TP and NBP temperatures (T) were found to be: TPNBP P T, K T, K natNe43332 ± 13 N/m2 (325.02 ± 0.10 mmHg)24.553 ± 0.00127.096 ±0.001 20Ne43326 ± 13 N/m2 (324.97 ± 0.10 mmHg)24.540 ± 0.00127.084 ± 0.001 22Ne43654 ± 13 N/m2 (327.43 ± 0.10 mmHg24.687 ± 0.00127.211 ± 0.001 (The temperatures are in terms of the NBS-1955 provisional temperature scale. The figures after the ± symbol indicate estimated uncertainties). The calculated vapor pressures of the isotopic natNe, based on Raoult's law of solution and the observed vapor pressures of the pure isotopes, are in agreement within the combined precision of the measurements with the observed values of natNe.