Intracerebral hemorrhage (ICH) constitutes 10% to 15% of all stroke patients. ICH score is a simple tool for outcome prediction for intracerebral hemorrhage patients. The score consists of 5 characteristics including age > 80 years, Glasgow Coma Scale, infratentorial location, hematoma volume and presence of intraventricular hemorrhage that were found to be independent predictors of poor prognosis. The study aimed to validate prediction of 30 days mortality in Thai intracerebral hemorrhage patients. This is a cross-sectional study of patients with ICH in Thammasat University Hospital from 1 January 2011 to 31 December 2011. Independent predictors of 30 days mortality were identifi ed and the ICH score was determined. The study showed that the signifi cant independent parameters were location of hemorrhage, Glasgow Coma Scale, and ICH volume. In multivariate analysis, the signifi cant parameters were infratentorial ICH, Glasgow Coma Scale (3-4), ICH volume > 30 cm3, and presence of intraventricular hemorrhage. We conclude that ICH score is a useful and reliable tool to predict 30 days mortality in Thai patients, although age > 80 years is not an independent predictor in this study.