To securitise an issue is to elevate it above politics to security status. At the global level, population growth has been securitised by a number of change agents. They have arrived at an understanding of population growth as existentially threatening and of population control as the best solution. This transformative process took place during the twentieth century and was enabled largely by the United Nations. However, in some Muslim states and societies where population growth is potentially threatening and securitisation of it is necessary, Islamic factors and agents might prevent this from happening. Events and experiences suggest that population control is antithetical to Islam. Muslim states and societies tend to experience higher growth and fertility rates than their non-Muslim counterparts. Furthermore, some Islamic agents have vocally opposed global and national population control objectives. Because of these two occurrences, Islam is assumed to be pro-natalist and anti-population control. It is also assumed that Islam is causal to high fertility and growth and the failure of control efforts. But is this necessarily true? Is population control antithetical to Islam? Moreover, will Islam and its agents prevent the securitisation of population growth by Muslim states and societies? These questions are explored through the case studies of Iran and Pakistan.