<strong>Orientation:</strong> The work of industrial/organisational (I/O) psychologists presents an interesting and relevant context for studying meaning and engagement as components of happiness.<p><strong>Research purpose:</strong> The aim of this study was to determine how I/O psychologists experience the meaning of their work and to investigate the relationships between their experiences of work-role fit, meaning of work, psychological meaningfulness and work engagement, utilising the happiness framework proposed by Seligman (2002).</p><p><strong>Motivation for the study:</strong> I/O psychologists spend more than 88% of their working day with people, and they are primary role models for happiness in the workplace. Information about their work engagement and experiences of meaning is therefore needed.</p><p><strong>Research design, approach and method:</strong> A survey design was used. A convenience sample (n = 106) was taken of I/O psychologists in South Africa. A biographical questionnaire, the Work-Role Fit Scale, the Work-Life Questionnaire, the Psychological Meaningfulness Scale, the Work Engagement Scale and a survey measuring the actual and desired time spent on six broad categories of work were administered.</p><p><strong>Main findings:</strong> Work-role fit predicted psychological meaningfulness and work engagement. The calling orientation to work predicted both psychological meaningfulness and work engagement. Work-role fit mediated the relationship between the meaning of work and psychological meaningfulness. Work-role fit partially mediated the relationship between a calling orientation to work and work engagement.</p><p><strong>Practical implications:</strong> A calling orientation to work should be fostered in I/O psychologists because it contributes to experiences of work-role fit, psychological meaningfulness and work engagement.</p><p><strong>Contribution/value-add:</strong> The results of this study contribute to scientific knowledge about work-role fit, engagement and meaning as components of happiness of I/O psychologists.</p><p><strong>How to cite this article:</strong><br /> Van Zyl, L.E., Deacon, E., & Rothmann, S. Towards happiness: Experiences of work-role fit, meaningfulness and work engagement of industrial/organisational psychologists in South Africa. <em>SA Journal of Industrial Psychology/SA Tydskrif vir Bedryfsielkunde</em>, <em>36</em>(1), Art. #890, 10 pages. DOI: 10.4102/sajip.v36i1.890</p>