The International Workshop on Integrated Nonlinear Microwave and Millimetre-wave Circuits (INMMiC) is a premier forum for advancing research on nonlinear RF devices, circuits, and systems. Launched in Duisburg in 1990 and revitalized in Rome in 2004, it has since been hosted across Europe, including Aveiro, Málaga, Göteborg, Vienna, Dublin, Leuven, Taormina, Graz, Brive-La-Gaillarde, Cardiff, and again in Aveiro. The last edition, in 2025, was held in Torino. INMMiC covers all aspects of nonlinear applications in RF, microwave, and millimeter-wave domains, including nonlinear measurement techniques, modelling and CAD methods, linearization, power amplifier efficiency, noise characterization, semiconductor technologies, terahertz nonlinearities, emerging technologies, and wireless power transmission. With its collaborative atmosphere bringing together young researchers and leading experts, INMMiC offers a unique opportunity to share ideas and foster innovation in these dynamic fields.