This volume constitutes the refereed proceedings of the International Conference on Ubiquitous Computing and Multimedia Applications, UCMA 2010, held in Miyazaki, Japan, in June 2010. The 14 revised full papers presented in this volume were carefully reviewed and selected from 150 submissions. The papers present current research in ubiquitous computing and beyond, multimedia modeling and processing, ubiquitous services and applications, multimedia services and applications, as well as multimedia and ubiquitous security.