The 13th International Conference on the History of the Language Sciences (ICHoLS XIII) was held at the Center for the Studies in Letters (CEL), headquartered at the University of Trás-os-Montes and Alto Douro (UTAD), in Vila Real, Portugal, from August 25 to 29, 2014. It was funded by the Portuguese Foundation for Science and Technology (FCT) and supported by the seven main international societies dedicated to the History of Linguistics (HoL): the Henry Sweet Society for the History of Lin-guistic Ideas (HSS); the North American Association for the History of the Language Sciences (NAAHoLS); the Société d?Histoire et d?Épistémologie des Sciences du Langage (SHESL); the Sociedad Española de Historiografía Lingüística (SEHL); the Sociedad Mexicana de Historiografía Lingüística (SOMEHIL); the Studienkreis ?Ges-chichte der Sprachwissenschaft? (SGdS); and the Giorgi Akhvlediani Society for the History of Linguistics (GASHoL). The present volume comprises forty selected papers from ICHoLS XIII, in Portuguese, Spanish, French, and English. Their quality was assessed by the scientific committee and a number of anonymous referees.0.