Last name Ланно (Lanneau 
, Ланно 
) , throughout the world, is quite a rare family name. The cognomen Ланно is habitual in Western Europe, particularly Belgium, where it is quite a rare surname, France, and Austria, where it is a rare surname. Measured by absolute frequency, it is commonest in France, Belgium, and the United States. Much less frequently, Ланно is the forename as well as the last name.