Because Japanese and Korean are typologically quite similar, a linguistic phenomenon in one language often has a counterpart in the other. The annual Japanese/Korean Linguistics Conference provides a forum for presenting research that will deepen our understanding of these two languages, especially through comparative study. The papers in this volume are from the eighteenth Japanese/Korean Linguistics Conference, which was held at the Graduate Center of the City University of New York in 2008. The papers cover a broad range of topics in Japanese/Korean linguistics, including phonology, morphology, syntax, semantics, historical linguistics, discourse analysis, prosody, and psycholinguistics.