The La Vergne Law (or Lavergne Law) of 1910, formally known as the Loi amendant le Code civil concernant les contrats faits avec les compagnies de services d'utilité publique (1910, Geo. V, c. 40), was an act of the Legislative Assembly of Quebec which made the use of both English and French mandatory on tickets, documents, bills and contracts issued by transportation and public utility companies. Prior to this, these were customarily in English only.