The study assessed and examined to what extent Supply Planning/Forecasting,rnProcurement, Warehouse/Inventory Management, and Distribution practices of OromiarnRegional Health Bureau (ORHB) are affecting its pharmaceutical supply chainrnperformance. In addition, the study identified which of these functions/practices isrndominantly affecting the pharmaceutical supply chain performance of the bureau.rnIt was found that computed Cronbach Alpha for all variables were above 0.7 whichrnmakes the reliability test acceptable to continue the study. Correlation analysis result hasrnshown that there is a strong correlation between supply planning and supply chainrnperformance (r=0.662, p=0.000, p