Last name Жанно (Jeannot 
, Жанно, Jehannot ) , around the world, is quite a common surname. The cognomen Жанно is characteristic of Martinique, where it is quite a common surname, Mauritius, and Luxembourg, where it is quite a rare surname. Measured by absolute frequency, it is the most numerous in France, Haiti, and Madagascar. Likewise, Жанно is the forename as well as the last name.