Foy de la Neuville is the mysterious author of Relation curieuse de la Moscovie, a late seventeen-hundreds account of a foreign traveler's trek to Russia. Almost nothing is known about this author, not even his real name. His reasons for traveling to Muscovy are also not known with certainty. It is speculated that he may have been a Polish diplomat assigned to Russia. De la Neuville has also been (falsely) identified as a pen name for another writer, Adrien Baillet.