ABSTRACT        Groundwater in El Fayoum governorate has a particular importance where it is the source for fresh water used for agricultural purposes. Thirty-eight groundwater wells were collected during summer 2017 and were analysis for chemical characteristics. These data has been used to preliminary evaluation of suitability of groundwater for irrigation purposes using groundwater quality indices which are TDS, RSC, TH, PI, MH, CAI and CR. The TDS in groundwater varied between 614.3 and 8950 with an average value of 4782.15. The RSC in groundwater varied between -37.74 mg/l and -1.41 mg/l with an average value of -19.575 mg/l. The TH values of the study area varied between 256.4 and 2658.8 with an average value of 1457.6. The PI of the groundwater samples varied between 42.46 and 92.83 mg/l with an average value of 67.645 mg/l. The MH values of the study area varied between 28.42 and 73.42 mg/l with an average value of 50.92 mg/l. The CAI values of the study area varied between -1.49 and 0.3 with an average value of -0.595. The C.R values of the study area varied between 3.08 and 335.08 with an average value of 169.08.