The first workshop on “The Thermodynamics of Collisionless Plasmas” will be held October 5th–7th 2026. Hosted and sponsored by the Bernoulli center at EPFL, Switzerland, with a view of Lac Léman (Lake Geneva), the workshop brings together researchers from plasma physics, statistical mechanics, and astrophysics. The aim is to connect researchers, establish a shared framework, and discuss emerging challenges. The workshop will host talks and a poster session.