This volume brings together a selection of 20 out of altogether 170 papers presented at the 13th International Conference on the History of the Language Sciences (ICHoLS XIII), held at the University of Trás-os-Montes and Alto Douro in Vila Real, Portugal, 25–29 August 2014. It is divided chronologically into four parts, ranging from classical antiquity to the end of the 20th century. Part I deals with general and theoretical topics in the history of linguistics in the United States, in Brazil, and the fields of lexicography and the relation of gesture to thought and language. Part II examines aspects of ancient Greek and Latin grammars, the concept of interjection from antiquity to humanism, and the classification of the parts of speech in the classical Sanskrit grammars. Part III focuses on 16th-century Latin-Portuguese grammaticography, the importance of 17th-century plurilingual textbooks, as well as two papers dedicated to French idéologues and their participation in late 18th-century prize competitions. Part IV is devoted to the works of 19th to late 20th-century European grammarians, philosophers, logicians and linguists, as well as some 19th-century Chilean grammarians and lexicographers of the Spanish language.