In this master’s thesis the focus is on improving the inclusive participation of human actors in Sustainable Design Engineering (SDE) student projects at Aalborg University, Denmark. The thesis explores the ways SDE students engage with participation, examines how other professions include diverse human actors in their work, and proposes a tool to encourage SDE students to reflect on their participatory approaches. To investigate the topic, a comparative study of 16 SDE theses submitted in June 2022, three workshops with SDE graduates, and an interview round with five professionals working with participation were conducted. Drawing on theories of sustainability transitions and participatory design, this thesis aims to discuss the rationale of inclusive participation in SDE student projects and encourages SDEs to critically reflect on their decisions in staging inclusive participation. Ultimately, the study aims to contribute to the development of tools and methodologies that enhance inclusive approaches in participatory design for sustainability transitions.