Trust in megaprojects: A comprehensive literature review of research trends

Abstract Megaprojects are large and complex projects involving substantial investment, social importance, and long time span. Owing to the multitude of actors involved in such projects, trust plays a critical role in their delivery. This study presents a comprehensive literature review to gather a wealth of information on a variety of research topics on trust in megaprojects. Related publications were analyzed, and 52 relevant papers were selected for content analysis. The final results show that research on trust in megaprojects is still relatively new, thematically diffused, and generally lacking strong theoretical foundations. A further analysis revealed six main research topics involving trust in megaprojects: (i) trust and the success of megaprojects; (ii) institutional/public trust; (iii) trust and megaproject delivery methods; (iv) trust and contracting; (v) trust as a governance mechanism; and (vi) trust as a competence of project managers. The outcomes of this study contribute to the body of knowledge on trust through a comprehensive investigation of the literature in project management and provide guidelines for further research on the phenomenon of trust in megaprojects, as well as project management delivery process in general.