Involuntary abnormal movements may occur as part of the symptomatology of acute stroke or may be delayed or progressive. We report two cases of post-stroke hemiballismus and contralateral tremor. Both patients presented acute hemiballismus. In one of the patients, the tremor started with acute symptomatology and the other was delayed. We discuss the possible pathogenic mechanisms for their movement disorders. To our knowledge, this is the first report of two cases with the unusual presentation of post-stroke hemiballismus and contralateral tremor.