Twenty five soil profiles representing El-Maraqui and Khamisa Regions in  Siwa Oasis, were studied in the filed, seven out of them were selected to  represent different soil mapping units. The soil profiles were classified and  land suitability evaluation were estimated using Soil Taxonomy and Sys  and Verheye system.                 On the basis of soil morphological, physical, and chemical properties, the  soils were classified into the following mapping units: 1- Pediplain soils: Calcic Aquisalids, fine loamy, moderatlly deep to  shallow, undulating to gently undulating on pediplains. The soil are  marginally suitable (S3nt) for irrigated agriculture. 2- Sandyplain soils: I. Calcic Aquisalids, sandy, very deep sandy or loamy sand through out the profiles, almost flat on sandy plains. The soil arenot  suitable (N1nt) for irrigated agriculture.                                     II. Typic Haplo Calcic, sandy, very deep, loamy  sand over sandy loam, almost flat on sandy plains. The soil are  marginally  suitable (S3nt) for irrigated agriculture. 3- Sabkha soils: Calcic Aquisalids, sandy, very deep, sandy or loamy sand  through out the profiles, nearly level on Sabkha. The soils are not suitable  (N1nt)  for irrigated agriculture .