The 20th Optics of Liquid Crystals Conference, OLC 2023 will be held in Radisson Blu Hotel, Szczecin, Poland from 17th September to 22nd September. It is a high-level international conference bringing together scientists and professionals from various research fields to share cutting-edge research, innovative applications, and the latest trends in liquid crystal technologies. The scientific program will include tutorials, plenary lectures, poster sessions, and invited lectures given by leading scientists from around the world working in the field of soft matter.