Problem- and project-based learning (PBL) is often highlighted as a valuable approach for addressing the need for interdisciplinarity in engineering education. However, studies indicate that applied projects in engineering education tend to be limited to a single discipline. This article presents a new project typology which can be applied in engineering education. The typology is based on an action research study in a systemic PBL environment. The model presented has two dimensions: a) the complexity of teams, ranging from single team to networks of teams, and b) the complexity of interdisciplinarity, ranging from disciplinary projects to broad interdisciplinary projects. This results in the identification of six different project types. This typology can be used as a conceptual framework for interdisciplinary learning throughout engineering education. The project types embrace both single-team projects and larger projects consisting of multiple teams working together on complex problems.