The present study positions a research to analyze the university students’ graffiti on classroom walls to make a thematic analysis of the graffiti used in the Iranian higher education context. It is an attempt to investigate how university students voice their opinions and express themselves using graffiti on the university classroom walls.  The study is based on the documentation and classification of more than 200 pieces of graffiti on university classroom walls in Isfahan, Iran. The analysis suggests different themes such as love and hatred, politics, religion, poem, class notes, signature, presence, date, complaint/despair, self-expression, drawings, etc. It is believed that this study is not only a sociological analysis of graffiti in the university context, but it may also be interesting to a wider audience like educators, administrators, teachers and parents.