XIth ICOPVS - 2026 will be held at Banaras Hindu University, Institute of Science, BHU Main Campus, Varanasi, UP 221005, India during 23-28 February 2026 with Prof. Jürgen Popp as conference chair. On behalf of organizing committee of ICOPVS-2026, we feel pleasure in inviting you to participate actively in this exciting conference. TOPICS COVERED IN ICOPVS 2026  Applications of Vibrational spectroscopy in: Nanomaterials, material Science, Nuclear Science, Life Science, Geoscience, Astronomy, Archaeology, Forensics, Surface Science, Thin films, Catalysis, Solar cells, Energy materials and related areas  Disease diagnostics by Vibrational Spectroscopy  Fourier Transform based Vibrational spectroscopy  Normal, Resonance, and Non-linear Raman spectroscopy  Vibrational spectroscopy under extreme conditions  Ultrafast Spectroscopy (Vibronic, Raman and IR)  Microscopy and Imaging by Raman techniques  Terahertz Spectroscopy - Emerging techniques  Acoustic Spectrocopy and Microscopy  Surface- and Tip- Enhanced Raman Spectroscopy (SERS and TERS)  Advances in Instrmentations in Vibrational/Vibronic Spectroscopy  Theoretical and Computational methods in Vibrational/Vibronic Spectroscopy