The ItAnt lexicon v.1 is a lexicon for the Restsprachen of Ancient Italy. It encodes lexical entries for four such languages, namely Oscan, Venetic, Neo-faliscan and Cisalpine Celtic. Entries are encoded at a morphosyntactic, semantic and etymological levels. Attestations are also encoded with links to text evidences contained in the digital inscription TEI EpiDoc corpora. For semantic encoding, we have adopted the classification of semantic fields proposed by Buck (1949) and formalised it as a SKOS taxonomy and Ontolex Lexical Concepts. Etymological information includes linking to the PIE and PIT roots, for which skeletal lexical entries are created, and to cognate words in sister languages such as Latin, Marrucinian Sabine, Vestinian, and many others. The lexicon is compliant with Web Semantic standards as it is modeled according to the Ontolex-lemon model and its extensions. This RDF version in tutle format is exported from the DigItAnt platform and can be uploaded on any triplestore. The lexicon is interlinked with the ItAnt Bibliographic dataset, the ItAnt digital corpora of inscriptions, the LiLa Knowledge Base (https://lila-erc.eu/data-page/), the IE Lexicon (https://lrc.la.utexas.edu/lex).