Cognomen Sannan (三男 
, Sannan 
) , in the entire world, is quite a rare last name. The surname Sannan is habitual in Lebanon, where it is quite a rare surname, Norway, where it is a rare surname, and Saudi Arabia. Measured by absolute frequency, the name is most common in Lebanon, China, and Saudi Arabia. Likewise, Sannan is the forename as well as the last name.