The International Workshop on Advanced Spectroscopy and Optical Materials, hosted periodically at the University of Gdansk, provides a forum for exchanging information on advances in solid-state spectroscopy, chemistry and physics of novel optical materials, applications of luminescent materials in science and technology. The upcoming edition of the IWASOM conference takes place at the Faculty of Mathematics, Physics, and Informatics, University of Gdansk, Campus Oliwa.During the 9th workshop, we will provide benefits for students and young researchers, including discounted conference fees and complimentary accommodation. Additionally, we plan to introduce keynote lectures designed specifically for leading researchers in the fields of solid-state spectroscopy and optical materials.