The KJF International Conference on Organic Materials for Electronics and Photonics 2015 (KJF-ICOMEP 2015) was held in Jeju, Republic of Korea from September 7 to 9, 2015. The annual KJF-ICOMEP is intended for world-renowned scholars, researchers and young students so that they may come together and share up-to-date knowledge in field-related advanced organic electronics and photonics. This special issue presents a collection of 26 articles peer reviewed and selected from the presentations given at KJF-ICOMEP 2015. These papers cover a wide range of topics related to organic electronic and photonics.

We would like to thank the Organizing Committee for the endeavor in making this conference a success, especially prof. Youngjong Kang, prof. Kaoru Tamada, and prof. Katsuhiko Fujita.

We are especially grateful to the Polymer Bulletin, Springer, for the opportunity to put together this special issue in 2016.