This paper focuses on how HR professionals view their role in contributing to organizational effectiveness in the HE sector. Drawing on interview data, we trace how rival definitions of organizational effectiveness relate to two emergent conceptions of rationality. Firstly we identify instrumental forms of rationality based on assessments of how well (or efficiently) organisations achieve pre-ordained objectives. Secondly, we identify stakeholder satisfaction models of organisational effectiveness, which concern the extent to which competing needs of stakeholders are satisfied and, thus, presuppose a more dialogic view of rationality. Our findings suggest that HR professionals do support attempts to re-orientate their institutions towards a top-down form of organisation, which would privilege high-level objectives and efficiency. This we argue implies a move away from a more traditional view of universities as discursive and participatory organisations, where effectiveness is regarded as meeting the varied needs of stakeholders, such as academics, students and the wider society, in a balanced way. However, whilst the HRM professionals largely favour such a shift, they acknowledge limitations to the extent that is practical or even entirely desirable.