Various movement disorders associated with cerebral infarction have been introduced. However patients with anterior cerebral artery territory infarction presenting with hemichoreoballism have never been reported. We present a 64-year-old man with hemichoreoballism and frontal alien hand syndrome on his right hand. Diffusion weighted brain MRI revealed hyperintensities in anterior two third of corpus callosum and superior frontal gyrus. Hemichoreoballism was improved after one day treated by clonazepam. We report the case with hemichoreoballism after anterior cerebral artery territory infarction.