Last name סינו (Sinno 
, סינו 
) , in all the world, is quite a common surname. The cognomen סינו is habitual in Western Asia, particularly Lebanon, where it is quite a common surname, Qatar, where it is quite a rare surname, and United Arab Emirates. Measured by absolute frequency, it most frequently occurs in Lebanon, Italy, and Saudi Arabia. Much less frequently, סינו is the forename as well as the last name.