Field survey was conducted in part of Western Oromia in West Shoa, Horro Guduru Wollega, East Wollega and Buno Bedele Zones covering 90 fields to assess diseases of faba bean, field pea, soybean, ground nut and sesame. Major diseases of faba bean recorded in Horro, Jimma Arjo and Chalia districts include Chocolate spot (Botrytis fabae S.), Ascochyta blight (Ascochyta fabae), Rust (Uromyces fabae) and faba bean Gall (Olpidium species). Similary, Powdery mildew (Erysiphe pisi var.), down mildew (Peronospora viciae), Septoria blotch (Septoria pisi) and Ascochyta blight () were the major diseases recorded on field pea in Chalia and Horro districts. Diseases recorded on soybean in Ilu Galan, Gida Ayana and chawaka districts include forage leaf spot (Cercospora sojina), Bacterial pustule (Xanthomonas axonopodis pv. glycines), Brown spot (Septoria glycines) and Cecospora leaf blight (Cercospora kikuchii.). Four major diseases were recorded on ground nut in Gida Ayana district and two diseases were recorded on sesame in Chawaka district. For all diseases, key parameters: prevalence, incidence and severity were described.