Cinderella Movie, a romance movie from Disney pictures which is directed by Kenneth Branagh in the years of 2015. This movie has a good moral value about to be patient and be kind with every people who have been making our life so hard, because there is a magic for good people. The aim of this study is to identify types of the commissive speech act found in Cinderella movie and also the contribution of commissive speech act in Cinderella movie to semantic study. The method used in this study is a qualitative-descriptive research design. The data are purposively chosen in order to answer the research question. The subject in this research is Cinderella movie. This research focuses on commissive act uttered by the characters found in Cinderella movie. The researcher uses documentation to collect the data. Based on the research, the researcher find forms of commissive speech act in Cinderella movie, there are 83 utterances as follow commit (6.02%), promise (15.66%), threat (18.07%), accept (14. 46%), consent (6.02%), refusal (20.481%), offering (10.84%), assure (1.02%), and bet (7.22 %). Refusal get the highest number because commonly in the dialogue of Cinderella movie dominated uttered by Kit who facing toward King’s opinion and Grand Duke’s opinion. The contribution of commissive speech acts in Cinderella movie is using the commissive speech acts in Cinderella movie as a media for teaching and learning process in Semanic subject especially commissive speech acts.