NeuralNet is the annual scientific meeting of the GDR NeuralNet, a research network supported by the Centre National de la Recherche Scientifique (CNRS) that brings together researchers, engineers and specialists in neural data acquisition, analysis, interpretation and modelling, and fosters collaboration across systems neuroscience, computational modelling, NeuroAI and data science. The 15th annual meeting takes place from 25 to 27 November 2026 at Université Paris Cité, Campus Odéon, Paris. Keynote speakers are Asli Ayaz (VIB-KU Leuven Center for Neuroscience), Sophie Bagur (ESPCI), Joao Barbosa (Neurospin), Brice Bathellier (Institut de l'Audition), Alex Cayco Gajic (École Normale Supérieure), Keith Doelling (Institut de l'Audition), Audrey Hay (CRNL, Lyon), Quentin Perrenoud (École Normale Supérieure), Lorenzo Posani (Paris Brain Institute), Pascale Quilichini (Institut de Neurosciences des Systèmes, Marseille), Peter Rupprecht (Brain Research Institute, Zürich), Ourania Semelidou (Institute of Neurodegenerative Diseases, Bordeaux), Manuel Valero (HMRIB, Barcelona) and Katharina Wilmes (Institute of Neuroinformatics, Zürich). Abstracts for talks and posters are due on 26 October 2026. Early registration, until 10 November 2026, costs €200 for regular participants and €90 for students and postdocs, rising to €250 and €100; it covers the meeting, two breakfasts, one lunch, two coffee breaks, the Thursday evening poster session and a wine and cheese mixer. A separately registered minischool precedes the meeting from 23 to 25 November. Organized by GDR NeuralNet (CNRS).