This study aimed to develop a Pancasila education textbook model based on Indonesia's Bhinneka Tunggal Ika "Unity in Diversity" as teaching materials for compulsory subjects in Indonesian universities. The study used a Research and Development approach, where the data were collected through focused group discussions and questionnaires. While qualitative data were analyzed using an interactive analysis and quantitative data analysis used percentages. The research participants consisted of lecturers and students at nine universities in Indonesia. The findings reveal that 1) the conceptual model of the Unity in Diversity-based Pancasila education textbook is applicable and contextual which presents the latest issues in accordance with the issue of Indonesian diversity. This model integrates tolerance values in the diversity of religious, physical, social, cultural, linguistic, and ideological aspects; 2) The content of book constitutes the following components: chapter titles, introductions, keyword and concept map, material presentation and elaboration of Bhinneka Tunggal Ika values, competence performances, summaries, reflections, authentic assessments, feedback, and followup activities.