This volume summarizes the main lectures presented at the Osaka University Macromolecular Symposium OUMS '95 on New Macromolecular Architectures and Functions, where the following three topics were discussed: (1) controlled polymerizations, (2) macromolecular organized systems, and (3) biomimetic polymers. Either of these topics in itself is a hot issue at present and frequently taken up as a main theme at a particular symposium. The present symposium invited leading scientists in these fields as guest speakers and is expected to attract interests of a significant range of readers.