Abstract Education institutions are thought to be largely responsible for environmental pollution even though businesses of all shapes and sizes contribute to this issue. This research explores how important factors might help government universities in Jordan develop and implement green innovation. It seeks also to examine whether the academic citizenship behaviour is a mediating variable that explains the connection between green training and development, green recruitment and selection, and organization environmental performance. Accordingly, an email survey was conducted to collect responses from 404 employees in the Jordanian Government universities. The study used contemporary variance-based structural equation modelling (Amos-SEM) for data analysis and hypothesis testing. The obtained results indicated a positive association between green training and development and two variables, namely academic citizenship behaviour, and organization environmental performance. They also indicated a positive association between green recruitment and selection and two variables, namely, academic citizenship behaviour and organization environmental performance. As well as between academic citizenship behaviour and organization environmental performance. Furthermore, they showed mediating effects of academic citizenship behaviour in the relationship between green training and development and organization environmental performance and between green recruitment and selection and organization environmental performance. This paper helps to provide insights to HRM practitioners, shedding light on the importance of Green HRM practices and their role in enhancing organization environmental performance.