Global managerialism describes an ambitious elite project – both orchestrated and spontaneous – to construct a durable human management system on a global scale. The theory of global managerialism that I present here argues that managerialism is the driving force underpinning the colonisation of ever greater swathes of the ideal and physical worlds. Global managerialism is both more and less than an economic or political system; it is a modus operandi, an infinitely reconfigurable worldview, justifying continuing elite domination and inegalitarian resource distribution.