The aim of this study is to determine the frequency of usage of the keywords in Master's and PhD dissertations prepared between 2010-2017 in the field of teaching Turkish as a foreign language. The sample of the study are 223 dissertations including 178 master's and 45 PhD in total, which are open access in YOK national dissertation database center and were written between the years 2010-2017. In this study, document analysis method, which is one of the qualitative research methods, was used. As a result of the research, it was concluded that in a total of 39 dissertations, including 36 master's and 3 PhD, there were no keywords. In the dissertations left, the 102 different keywords were determined. Depending on these different keywords the 13 different subjects in general were determined. These subjects adress the vocabulary, grammar, culture, idioms and proverbs, basic language skills, Common European Framework References for Languages, motivation-anxiety-adaptation, language learning strategies, textbooks, material-play-activity, assessment-evaluation, teacher competences, student autonomy, methods and techniques, Turkish in Turkey and in the world. All keywords mentioned in dissertations were re-coded according to their subjects. The keywords in the dissertations related to basic language skills were coded and provided additionally. The findings shown in the tables and graphs in the study. However, the references of 223 master's and PhD dissertations were not given in the end of the study in order not to busy too much place in the bibliography of the study.