The European Optical Society Annual Meeting, EOSAM, is a major international scientific conference and exhibition covering all aspects of optics and photonics.

The 13th EOSAM will be held in Delft, The Netherlands, from 24–28 August 2025.
It is organized by the European Optical Society (EOS) in close collaboration with Delft University of Technology (TU Delft).

EOSAM covers the full spectrum of optics and photonics through various topical meetings and sessions. This year’s topical meetings include Nonlinear and Quantum Optics and Quantum Polaritonics.