This Community features research articles and reviews covering topics related to those presented at the 11th International Meeting of the Union for Compact Accelerator-driven Neutron Sources hosted by TRIUMF, February 24-28, 2025. UCANS11 is the 11th meeting in a biennial series of meetings that are dedicated to ongoing development of CANS, technology challenges and emerging science and novel applications. UCANS11 is committed to continue advancing the equal participation and collaboration between scientists in all countries in its activities and the principle of free and responsible practice of science.