After more than two decades of the Salamanca Statement, discrimination and marginalization still exist. There is a need to implement inclusion to promote educational accessibility, quality, and equity for all to combat exclusion. As a result, inclusion challenged educational systems, especially teachers who are its primary implementers. Understanding the significant role of teachers in the parlance of the inclusive agenda is an essential area of inquiry; however, relatively less is known about it. This paper addresses the chasm by looking more profoundly into the teachers’ skills and dispositions about inclusion. Through a cross-sectional survey, this paper examined and compared the Filipino and Thai in-service teachers’ efficacy and attitudes about inclusion and its association with their intentions for inclusive practices. Data revealed that Filipino teachers have a generally higher level of positive attitudes, efficacy, and intentions for inclusive practices than their Thai counterparts. Also, there is a significant and positive correlation between the respondents’ attitudes, efficacy, and intentions for inclusive practices. Considering the historical and cultural contexts, the results of the study construed a deeper understanding of the teachers’ inclusive practices. Insights gathered from the study are instrumental in the examination and understanding of the teachers’ role in the inclusive agenda.