Mobile commerce (m-commerce) is concerned with business transactions where transacting partners use mobile communication technologies for service initiation, agreement, or fulfillment [10]. M-commerce assumes mobility of the devices and their users, possible mobility of services between devices, and the use of related location or mobility information to enable, support, or conduct transactions. Overall, m-commerce has been on the rise—especially during the past five years—as smartphones and broadband connections have become everyday realities in most advanced industrial societies and throughout the world. This special issue reports advances in m-commerce research and discusses related challenges. It includes articles selected from the best work presented at the Twelfth International Conference on Mobile Business (ICMB) in Berlin on June 10-13, 2013, along with additional manuscripts submitted to a complementary call for papers.