2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/73129We provide infinitely many examples of pairs of diffeomorphic, non simply connected K\" ahler manifolds of complex dimension three with different Kodaira dimensions. Also, in any possible Kodaira dimension we find infinitely many pairs of non deformation equivalent, diffeomorphic K\" ahler threefolds.11 pages, no figures, submitted for publicationDifferential GeometryAlgebraic Geometry32J17; 19J10The Kodaira dimension of diffeomorphic Kähler 3-foldstext