The last /wo decades have seen an unprecedentedly rapid social and economic change in Southeast Asia and this has both reshaped, and in turn been influenced by, patterns of population mobility. The present paper explores some aspects of this transformation of population movement by focusing upon the largest country in the region, Indonesia, and upon /wo important types of movement in that country, namely international labour migration and rural to urban movements. These movements have increased greatly in scale and complexity in response to wider shifts in the Indonesian economy and society. The paper attempts to describe and account for these changes. Particular attention is paid to the increasing participation of women in these movements and its implications.