The 3-volume set CCIS 3095 - 3097 constitutes the proceedings of the 18th Mexican Congress on Artificial Intelligence, COMIA 2026, which took place in Cuernavaca, Mexico, during May 25 - 29, 2026.The total of 183 papers included in the proceedings was carefully reviewed and selected from 312 submissions. They were organized in topical sections as follows:Part 1 : Applications of Artificial Intelligence; Medical Applications.Part 2 : Machine learning and pattern recognition; Artificial Vision and Robotics; Computational Intelligence and Data Mining.Part 3 : Natural language processing; Intelligent systems; Deep learning.