Graffiti is any graphic or written inscriptions often inscribed by unidentified individuals on a public or private wall. Despite its ubiquity in Jordan, graffiti has not been given enough attention by scholars, especially in the Jordanian context. The primary objective of this study is to investigate the communicative functions of graffiti in Jordan. The study attempts to answer one straightforward question: What are the communicative functions of graffiti in Jordan? To this end, 1187 graffiti were collected from the major cities, villages, and camps in Jordan. This draws upon Van Dijk’s (Handbook of discourse analysis, 1–2, 2016) socio-cognitive approach and Content Analysis. The findings reveal that graffiti in Jordan serves a host of important communicative functions, including expressing feelings and emotions, advertising, recording wisdom, seeking fame, expressing loyalty and belonging, expressing propaganda, admiring, presenting political content, tagging, expressing humor, degrading and defaming, marking territory, challenging, complaining, instigating, giving instructions, presenting religious content, warning, commemorating, and showing social etiquette. The function of expressing feelings and emotions is the most frequent one, whereas the function of showing social etiquette is the least frequent one. This study also reveals that graffiti has become a common feature of Jordan’s streets, villages, and cities. Additionally, this study concludes that graffiti in Jordan has a strong relationship with the location in which it appears. Hopefully, this study will trigger new research in the same field to enhance our understanding of the nature of the human language in relation to culture.