Cognomen Jannou (Jannou 
) , around the world, is a rare family name. The family name Jannou is characteristic of France, where it is a rare surname, Argentina, where it is a very rare surname, and China, where it is an extremely rare surname. Much less frequently, Jannou is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jannou | China, United States, India, Argentina, France |
Le, Leelou, Morgane, Antoine, Anthony, Patrick, Rebecca, Ricardo, Gabriel, Estelle, Olivier, Océane, Philippe, Jennifer, Frederic, Isabelle, Séverine, Alejandro, Gildas, Gerard, Daniel, Pierre, Paul, Loic, Joel, Iris, Yves, Yvon, Marie, Alain, Dominique, Brest, Louis, Loïc, Lucas, Andres, Aurore, Carlos, Claude, Claire, Kevin, and Christopher