Family name Ruizan (Ruizan 
, Руизан 
) , globally, is a rare cognomen. The last name Ruizan is habitual in Georgia, where it is quite a common surname, Philippines, where it is a rare surname, and Cambodia, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Georgia, Philippines, and Spain. Also, Ruizan is the forename as well as the last name.