Coffee Arabica is an essential commodity to the livelihood of millions of Ethiopians and its quality had critical importance to the coffee industry. A study was conducted to determine engineering physical properties of nine newly released coffee cultivars dried by open sun drying ( direct sun light) .Coffee cultivars were (Gawe , Dessu , 744, 7440, 74148, Gesha , Merdacheriko , Wushwush and CJ 19) prepared using wet (washed) processing method during harvesting of 2017/18 cropping season, which were collected from different altitude of south west, Ethiopia. Physical properties of the green bean such as dimensions (length, width and thickness), geometric mean diameter, arithmetic mean diameter, equivalent mean diameter, frontal surface area, cross sectional area, sphericity, aspect ratio, shape index, hundred bean weight, bulk and true density, bean volume, porosity and angle of repose for each cultivar were studied. Most large values of physical properties such as major dimensions, arithmetic mean, geometric mean and equivalent mean diameters; frontal surface area, hundred bean weight and volume of beans were recorded for cultivar 744 at moisture content of 11.67% (wb) and highest values of bulk density, true density, porosity and angle of repose and the lowest values of 100 bean weight, moisture content and volume were recorded for cultivar74148 at moisture content of 9.60%. In the future study other engineering properties should be studied to provide fairly comprehensive information on design parameters involved in recent coffee post-harvest machineries.
