This study identifies the role of religiosity in the willingness to pay for halal transportation among Muslim consumers in Malaysia by applying the ABC theory. Applying a purposive sampling method, data were gathered from questionnaires distributed to Muslim consumers at malls in Kuala Lumpur and Putrajaya. From 250 Muslims who were approached, 200 respondents agreed to answer the questionnaire. SMART-PLS 3.3.2. was used to analyse the data for this study using a Structural Equation Modelling (SEM) approach. Out of six direct hypotheses tested, five hypotheses were found supported. From four hypotheses on mediation, only one was found as unsupported. Religiosity was found to have a moderation effect between knowledge and the WTP for halal transportation. The findings provide useful information on the WTP for halal transportation. Related parties such as governments, halal transport service providers and customers can use these findings to plan further actions in order to enhance the WTP for halal transportation. The study reveals the capability of the ABC theory to identify the factors of the WTP for halal transportation among Muslim consumers in Malaysia. The findings also show the moderation effects of religiosity on the WTP for halal transportation. The study also incorporates awareness as a mediator and as a sequential mediator within the model. The findings also enrich the literature on the WTP in halal studies.