This book constitutes the refereed proceedings of the Third International Conference on Information Technology in Bio- and Medical Informatics, ITBAM 2012, held in Vienna, Austria, September 2012, in conjunction with DEXA 2012. The 12 revised long papers and 3 revised short papers presented were carefully reviewed and selected from numerous submissions. The papers address the following topics: medical data mining and information retrieval; metadata models, prediction and mobile applications; systems biology and data mining in bioinformatics. The papers show how broad the spectrum of topics...