C14: from Old French, literally: (one who is) holding, from tenir to hold, from Latin tenēre
Word Origin and History for tenant
n.
early 14c., "person who holds lands by title or by lease," from Anglo-French tenaunt (late 13c.), Old French tenant (12c.), noun use of present participle of tenir "to hold," from Latin tenere "hold, keep" (see tenet).