Trulyfiona, Tiara. 2013. An Analysis Of Taboo Words Used by Characters in Freedom Writter Movie. Study Program of English, Universitas Brawijaya. Supervisor : Endang Sasanti; Co – Supervisor : Muhammad Rozin.Keywords : Sociolinguistics, taboo words, “freedom writer” movie, four ethnic groups.Sociolinguistics is the study of language in relation to society, it is concerned with investaging the relationship between society and language. There are many majors of Sociolinguistics, but this study only concerns with one major Sociolinguistics. It is taboo words. Taboo is one study of Sociolinguistics that has relation with culture and society. Taboo is a part of language and language itself is a part of human life. Nowadays, taboo words can be found easily in our environment. For example, “Freedom Writer” movies, there are some taboo words that are uttered by the characters in this movie. This research only focused on the type of taboo words and the purpose of using taboo words by the characters. The purpose of this research is to find out the types of taboo words and the purpose of using taboo words by the characters. In analyzing the type of taboo utterances, the writer uses the theory of Wardaugh (1986). In analyzing the factors affecting of using taboo words, the writer uses the theory of Holmes (1992). The characters consist of four ethnic groups, they are African - Americans, Hispanics, Asians and white. After doing the analysis, the writer found 39 taboo utterances by African - Americans, 7 taboo utterances by Hispanics, 6 taboo utterances by Asians, and 2 taboo utterances by White people. After analyzing the taboo words used by the character, the writer found out that most African - American using taboo words because of their Status social, the writer found out the factors affecting them use taboo words. The writer also found that the type of taboo words that are mostly uttered are excertion, bodily function and religious matter terms. The writer hopes that next linguistic student conduct research taboo words involved not only in violence but might also in the other condition. It can be used to compare taboo word in different atmosphere. The writer also suggests using other object to research. It is not only in the movie but it can be in the poem or song. She also suggests the next researcher to use different theories and methods if they want to conduct similar research.