The present invention is a regenerative vapor condenser for removing condensable vapors from a mixture of the vapors and another gas. The regenerative vapor condenser comprises two regenerator systems, a heat exchanger, and a valve mechanism. Each regenerator system comprises a regenerator for storing and releasing heat, and a phase separator for separating gas from solid and liquid phases. During operation one regenerator system operates in heating mode and one regenerator system operates in cooling mode. The vapor-gas mixture is directed by a valve system downward through the regenerator on cooling mode wherein the vapor-gas mixture is cooled by heat transfer to the cool regenerator media to below the dew point of the vapor causing the vapor to condense into a liquid or solid phase. The gas and condensed vapors exit the regenerator on cooling mode and enter the phase separator on cooling mode from where the gasses are directed into the heat exchanger and the condensed vapors are directed to a collection vessle. The gasses pass through the heat exchanger wherein they may be further cooled and are then passed by way of the phase seperator on warming mode into the regenerator on warming mode. The gasses are warmed in the regenerator on warming mode and are then vented by way of the valve system.