This volume presents thirteen original papers dealing with various aspects of two related areas of research of major concern to linguists of all theoretical persuasions: voice and grammatical relations. The papers are written from typological, functional, and cognitive perspectives, and contain a number of general studies as well as studies focusing on specific issues, and offer a wealth of data from a broad range of languages. The volume provides up-to-date discussions of an array of issues of theoretical concern, including the nature of grammatical relations, voice in agent/patient systems, the expression vs. non-expression of participant roles, and personal vs. impersonal passives. The papers in the volume demonstrate that investigations into the nature of voice and grammatical relations can still yield fresh theoretical and typological insights.