There are lots of environmental issues happening around us such as global warming and air pollution caused by carbon footprint released by different modes of transportation. As public universities have their own community, many of them including Universiti Teknologi Petronas (UTP) approach sustainability in campus by providing public transportation. Because of large scale emission caused by the influence of private vehicles on campus, campus sustainability can be achieved if universities encourage students to use public transport. Thereby, reducing number of private vehicles on campus. Hence, to encourage students to use public transport, the efficiency and effectiveness of public transport need to be improved. Based on the questionnaires, non-strategic bus-stop location is the reason why UTP students did not use public transport in campus. Finding the strategic bus-stop location using spatial analysis is one of the ways to improve the efficiency and effectiveness of public transport. Therefore, the objectives of this research are to determine the optimal bus-stop locations using spatial analysis and to determine the sustainability of selected bus stop locations to ensure that bus-stop locations will be conducive for users and encourage the use of public transport. Site suitability analysis is one of spatial analysis technique which is the best option that is used to select the best site according the criteria that have been set. While Analytical Hierarchy Process (AHP) as Multi Criteria Decision Making (MCDM) technique is used to determine relative importance of the conflicting criteria. Finally, the optimal bus-stop locations were identified and ranked based on their level of sustainability. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021.