Turbulent flow in gas chromatography was achieved and its effect was studied with high-speed, high-pressure equipment. A gas-solid capillary and several packed columns were used. The onset of turbulence was associated with abrupt decrease in peak width in the capillary and gradual leveling off and decrease in the packed columns. The existence of separation under turbulent conditions was shown. The potential of the method was demonstrated by its short elution times and rapid generation of theoretical plates.