There are Lost Property offices in different stations.
You can call Lost Property for the different Cercanías hubs:
You can contact the Lost Property office of the different Cercanías hubs Monday to Friday, from 8.00 a.m. to 2.00 p.m.
For international destinations: Paris, Toulouse, Marseille and Lyon
Station from Lisbon Santa Apolonia, gate no. 50, in the Customer Service Office.