Recently, a new technique so-called dispersive liquid-liquid microextraction has been extensively used for the extraction of organic and inorganic compounds from the environmental samples. Among the organic molecules, phenols are highly considered because of high toxicity and sustainability. For these reasons, the US Environment Protection Agency and the European Union have included some phenols in their priority pollutant lists. According to the European Union, individual concentration of phenols in drinking water should not be upper than 0.1µg/L .Gas chromatography and High performance chromatography are the most common analytical techniques used for the determination of phenols. In this work, dispersive liquid - liquid microextraction coupled with Reversed-Phase high performance liquid chromatography-diode array detector (RP-HPLC-DAD) was applied for the extraction and determination of eleven priority pollutant phenols from waste water samples. For the extraction, an appropriate mixture of acetone as dispersive solvent and carbon disulfide as extraction solvent was injected rapidly into a glass tube with conical bottom containing aqueous solution of phenols. This injection led to a cloudy water solution, caused by the fine droplets dispersion of the immiscible extraction solvent (carbon disulfide) in the aqueous sample. The result of this phenomenon was the generation of a high contact area between the aqueous phase and the extraction solvent. The final step of the microextraction procedure was centrifugation (4 min at 3500 rpm) to collect the dispersed tinny disulfide carbon droplets in the bottom of the conical test tube. After centrifugation, the sedimented phase was completely transfered to another tube with conical bottom using a 250 µl HPLC syringe. Then the organic solvent was evaporated by a slow flow of nitrogen gas and the residue was resolved in 12.5µl mixture of methanol-water (30:70) and then 8.5µL of the solution injected into the HPLC. In order to obtaining optimum condition of the extraction, several parameters affecting on the extraction such as: extraction solvent type, dispersive solvent type, extraction and dispersive solvent volume, salt addition and pH were studied. Under optimum condition, namely, pH=2, 165µL extraction solvent volume, 2500µL dispersive solvent volume and without salt addition, enrichment factors and limits of detection were ranged 30.2 - 373.3 and 0.01 - 1.3 µg/L, respectively. The relative standard deviations for analysis of 40µg/L of each phenols in water samples were in the range of 2.6 - 16.6% (n=5). Also, the relative standard deviation for spiked wastewater solutions at level of 10µg/l of each phenols were ranged between 4.3 and 19.3% (n=5). Good linearity was obtained in the range of 0.5-200µg/L for the most compounds and correlation coefficients ranged from 0.9958 - 0.9997. The recovery for waste water samples at spiked level of 10µg/l varied from 65.5 to 108.3%.