The 12th Latin American Conference on Computational Intelligence 2026 (IEEE LACCI 2026) will be held fully in person at Universidad del Pacífico in Lima, Peru, from November 3 to 6, 2026. Co-located with the IEEE CIS Summer School on Computational Intelligence and Applications (IEEE CIS SSoCIA 2026), this international forum brings together the computational intelligence community to present the latest achievements and innovations across various areas, including: