This study investigated the determinants of food security and identified the major factorsrnthat jointly discriminate the rural households of Tigray region into food secure and foodrninsecure households. The study is made based on the 2004/2005 Household Income,rnConsumption and Expenditure Survey (HICES) and Welfare Monitoring Survey (WMS)rnwhich were conducted by Central Statistical Agency (CSA). To analyze the datarndescriptive statistics, bivariate and multivariate analyses were used. The descriptivernresults revealed that about 42% of the households were found to be food insecure whilern57% were food secure. The bivariate analysis was performed to investigate the effect ofrneach predictor variable on the household food security status. A priori expectations aboutrnthe relationships between household food security status and factors influencing it werernsatisfied for the majority of the cases considered. Moreover, a univariate ANOVA ofrneach predictor variables against the household food security was performed to identifyrnthe variables that have significant contribution to the discrimination of the two householdrngroups. Accordingly, distance to input sources, farmland size, TLU, number of oxen,rnhousehold size were found to be the major discriminating variables. This was furtherrnsupported by multivariate discriminant function analysis applied to sampled farmrnhouseholds. The importance of the contribution of factors in discriminating the twornhousehold groups were ranked by the discriminant function. As a result, distance to inputrnsource was ranked first followed by household size, farmland size, livestock ownership,rnnumber of oxen, use of fertilizer, gender and educational level of the household head. Inrnaddition to this the classification results revealed that 79.7% of the households wererncorrectly classified. This indicates that the discriminant function employed in this studyrnwas efficient in discriminating the rural households based on the eight predictors.