2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/14504The current status of observational studies of lithium depletion in open clusters is reviewed, concentrating mainly on G and K type stars. I attempt to answer the following questions: Can the lithium depletion patterns seen in open clusters be explained in terms of standard stellar evolution models? What is the observational evidence for non-standard mixing processes and on what timescales do they operate? Does metallicity play a significant role in lithium depletion? Can lithium still be used as a means of dating young stars? What future observations might yield better answers to these questions?10 pages, 3 figures, to appear in Stellar Clusters and Associations: Convection, rotation and dynamos, May 1999, Sicily, ed. R. PallaviciniAstrophysicstext