Family name 兰西 (Lancy 
, 兰西 , Lancey 
) , all around the world, is quite a rare last name. The cognomen 兰西 is characteristic of Trinidad and Tobago, where it is quite a rare surname, United Arab Emirates, where it is a rare surname, and Australia. In absolute terms, it is commonest in the United States, China, and India. More prevalently, 兰西 is the forename as well as the last name.