Mobile learning has been adopted to a varying extent across the countries of Southeast Asia. Though mobile learning initiatives in the UK, Europe, the United States and Australia are well-documented, much less is known about mobile learning initiatives in Southeast Asia. This region is culturally and economically diverse, containing both developed countries such as Singapore and developing countries including East Timor. This range of economic development means that the penetration of telecommunications technologies, including infrastructure to support mobile and internet networks, varies vastly and the extent to which this technology is used for learning, similarly varies. This chapter begins with an examination of the mobile device market penetration in the various countries of Southeast Asia and the particular demographics of those users. Internet censorship potentially will impact on mobile learning initiatives in some countries and this is examined briefly. The status of mobile learning in a cross-section of Southeast Asian countries will be examined, with a particular focus on government policies, critical infrastructure and notable mobile learning initiatives. The chapter concludes with a review of the enablers and barriers to mobile learning in Southeast Asia and a look at future directions.