Kim, YooKang. 2003. Prosodic structure and its phonological role in Germanic. English Language and Linguistics 15, 19-43. Development in modem phonological theory has led to reanalysis of longstanding problems in historical linguistics. In particular, the introduction of prosodic units as a point of reference in sound change overcomes some of the most notable problems in Germanic historical phonology. This paper can be seen as an extension and refinement of this trend. The main goal of this work is to provide a prosodic account of West Germanic Gemination, Sievers' Law in Gothic and stress patterns in Germanic. I propose that a bimoraic trochee plays a role in Germanic(Kim 1989, Sohn 1994, Kiparsky 1998)and serves as a prosodic domain of the phonological processes. I show that the processes are sensitive to a domain of the foot rather than the syllable, and can be interpreted in a unified way as a process to attain or maintain the foot structure. Key words: prosody, Germanic, Old English, stress, germination