In many cases, mosques have been accused by anti-terror agencies as a potential place to spread transnational Islamic ideologies. This study examines the perceptions of mosque administrators (ta’mīr) about Pancasila, Islamic sharia and transnational ideology. This research took place in South Tambun, a densely populated subdistrict in Bekasi, West Java. Mostly populated by urbanites, it has heterogeneous religious understanding. A quantitative research method with descriptive statistics is used in this study to analyse the results of the survey conducted. Furthermore, a qualitative technique is carried out through a series of interviews conducted with the respondents. Triangulation is carried out to increase the validity and credibility of the findings. The results showed that 40% of mosque administrators surveyed thought that transnational ideologies were not in accordance with the spirit of Pancasila. Meanwhile, the remaining 40% and 20% of respondents, respectively, consider transnational ideologies to be dangerous to social order, and divisive. The qualitative analysis shows that the respondents do not want the implementation of Islamic sharia and an Islamic state within the Indonesian constitutional framework.Contribution: This research can be used by policymakers and anti-terror agents to proportionally and participatively involve mosque administrators to narrow the wiggle room for the spread of transnational ideology.