Background: The different levels of teacher morale across elementary schools deserve particular attention, as they have important implications for students’ engagement, behavior, and academic outcomes, as well as for teachers’ job satisfaction and emotional well-being. Objective: This study aimed to explore the influence of teacher teaching commitment on their morale in Catholic elementary schools in Merauke, South Papua, Indonesia. Method: We utilized a survey research approach to obtain data from a total of 95 Catholic elementary school teachers in Merauke, South Papua, Indonesia. Obtained data were analyzed statistically using a simple linear regression analysis by employing Statistical Package for the Social Sciences version 25. Findings: The results of data analysis reveal a positive and significant effect of teacher teaching commitment on their morale in Catholic elementary school teachers in Merauke, South Papua, and Indonesia. Implication for Practice and Research: The findings highlight the need for school leaders and education policymakers to foster teacher commitment through supportive work environments, professional development opportunities, and recognition of teachers’ contributions. Strengthening teachers’ commitment may enhance their morale, which in turn can positively influence student outcomes and the overall quality of education in Catholic elementary schools.