Since its inception, Blockchain has proven itself as an emerging technology that revolutionizes diverse industries. Among others, Internet of Things (IoT) is one of the application domains that reaps large benefits from Blockchain. The Blockchain’s potential to overcome different challenges of IoT services has shifted the research interests of many scientists towards addressing the integration of two disruptive technologies, i.e., IoT and Blockchain. This resulted in publishing more research papers in this emerging field. Thus, there is a need to conduct research studies through which a broad overview of research contributions in this field could be investigated. To respond to this need, a number of review papers have been published recently, each of which has considered the integration of IoT and Blockchain from a different perspective. Nonetheless, none of them has reported a bibliometric analysis of the state-of-the-art in the integration of IoT and Blockchain. This gap stimulated us to investigate a thorough analysis of the current body of knowledge in this field, through a bibliometric study. In this paper, we conducted a bibliometric analysis on the Scopus database to assess all scientific papers that addressed the integration of IoT and Blockchain. We have analyzed those collected papers against four criteria including annual publication and citation patterns, most-cited papers, most frequently used keywords, and most popular publication venues. The results disseminate invaluable insights to the researchers before establishing a research project on IoT and Blockchain integration.