2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/125046The very clean theoretical predictions for the rare decays K --> pi nu nu_bar and KL --> pi0 l+ l- are reviewed, and their various theoretical inputs summarized. The less favorable situation for KL --> mu+ mu- is also commented.Talk given at 4th International Workshop on the CKM Unitarity Triangle (CKM 2006), Nagoya, Japan, 12-16 Dec 2006High Energy Physics - PhenomenologyRare K decays in the Standard Modeltext