Abstract: Description of the physical characteristics of livestock breeds is very important for developing a breeding strategy in a particular production system. Arsi- Bale sheep are among the potential breeds of Ethiopia reared in the mixed crop and livestock production system of Oromia Ethiopia. This research was conducted to characterize the morphological features of Arsi-Bale sheep in an attempt to develop a breeding strategy that suits the production system of the area. A total of 777 sheep were characterized for different morphological features. Most 503 of the sheep in the flock were females and 274 were male sheep of four and above dentition classes. Browncoat colour was abundant (34%) and 60.7% of the colour pattern was plain. Arsi-Bale sheep were long fat-tailed (87.9%) and hairy (73.7%). The overall least square mean body weight was 25.9±0.2 kg and was affected by sex and age of sheep. The mean chest depth (26.85±0.3),heart girth (68.8 ± 0.4 cm), body length (41.6±0.4cm), horn length (7.4±0.2 cm) and tail circumference(18.4±0.1cm) were also affected by sex and dentition. Positive and significant correlations were obtained between body weight and other linear body measurements. The highest correlation coefficient was between body weight and chest depth. The positive and significant correlation of weight with linear body measurements indicates that linear body measurements can be used as a marker to estimate weight for different purposes. For breeding and selection purposes, since, there is a need to be more precise use of models involving more number of variables is important.