This volume contains the revised texts of talks and posters given at the Nordic Prosody X conference, held at the University of Helsinki, in August 2008. The contributions by Scandinavian and other researchers cover a wide range of prosody-related topics from various theoretical and methodological points of view. Although the history of the conference series is Nordic and Scandinavian, the current volume presents studies that are of mainly Baltic origin in the sense that of the eight languages presented in the proceedings only English is not natively spoken around the Baltic Sea. Research issues addressed in the 25 articles include various aspects of speech prosody, their regional variation within and across languages as well as social and idiolectal variation. Speech technology and modelling of prosody are also addressed in more than one article.