Professor Rodney Turner has contributed to the theory and practice of project management in his seminal works. In contributing to the Festschrift intended to honour Professor’s Turners’ work in project management this paper makes a contribution to the theory of project management by investigating how institutional theories can be applied to better management of projects, with a specific focus on megaprojects. Bent Flyvbjerg argues that megaprojects are a completely different breed of projects and have to be managed differently from conventional projects. Following his lead we argue that Megaprojects are large-scale sociotechnical undertakings that are complex and embedded in institutional frames. Hence, as pointed out by some scholars who have investigated global infrastructure projects, in organizing these projects institutional work should precede technical work. Prominent project management scholars have also been advocating project management researchers pay attention to institutional theories to take into account the broader environment in which projects are situated. In this paper we argue that, in line with the field of strategy, where more attention is being paid to institutional contexts of practice, institutional theory provides a valuable framework for thinking about organizing megaprojects.