This article sets out to survey the processes of transmission of Islamic knowledge in Kelantan during the long period of the nineteenth and twentieth centuries. It has two aims: first, to briefly trace the primary scholarly networks of the ulama (religious scholars) of Kelantan in the period between the nineteenth and the twentieth century; and second, to examine how the local ulama disseminated Islamic ideas to the local community of Kelantan. It suggests that scholarly networks in Kelantan during these centuries were closely linked not only to the Middle East (Mecca and Egypt), but also to South Asia (India and Pakistan). What it also suggests is that it was the local, rather than the ' foreign', ulama, who became the primary disseminators of Islam in Kelantan during this period through the establishment of surau, pondok, and madrasah. The implication is that during this period, teachers (ulama), rather than traders, were the most influential disseminators of Islamic knowledge in Kelantan. The ulama became central in the Islamization of Kelantan.