The Frontiers in Optics + Laser Science (FiO LS) 2026 will take place from September 27 to October 1, 2026, at the Joseph A. Floreano Rochester Riverside Convention Center in Rochester, New York, USA. Organized by Optica and the American Physical Society (APS), the conference is a leading international event for optics, photonics, and laser science, bringing together researchers, scientists, engineers, students, and industry professionals from around the world. Attendees will have the opportunity to explore the latest advancements in quantum technologies, space optics, machine learning in photonics, optical materials, imaging systems, laser science, virtual and augmented reality, and emerging photonics applications through technical presentations, exhibitions, poster sessions, and networking events.