The 1st IKU-SPECTRA International Congress on Spectroscopy (IKU-SPECTRA ICS 2026) will be held at Istanbul Kültür University on May 21-22, 2026. The congress is organized within the framework of the Spectroscopy@IKU ERA-Chair Project, funded by the European Union under the Horizon Europe WIDERA programme, and hosted by IKU-SPECTRA: Molecular Sciences and Spectroscopy Applied Research Center. IKU-SPECTRA ICS 2026 aims to provide an international platform for researchers, academics and industry representatives to present their latest findings and discuss emerging developments across all areas of spectroscopy, from fundamental molecular studies to applied research. The scientific program will feature distinguished invited and plenary speakers from leading international institutions, including renowned experts in molecular spectroscopy, theoretical chemistry, materials science and interdisciplinary applications. Through keynote lectures, invited talks and contributed presentations, the congress will foster scientific exchange and new research collaborations. We look forward to welcoming participants for two days of high-level scientific discussion and networking in Istanbul.