2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/183839We give an overview of heavy flavour lifetime measurements, focusing on recent results from the Tevatron and the B factories.Invited talk at the Workshop on the CKM Unitarity Triangle, IPPP Durham, April 2003 (eConf C0304052). 8 pages LaTeX, 12 figuresHigh Energy Physics - Experimenttext