Santiago, (also San Iago, San Tiago, Santyago, Sant-Yago, San Thiago) is a Spanish name that derives from the Hebrew name Jacob (Ya'akov) via "Sant Iago", "Sant Yago", "Santo Iago", or "Santo Yago", first used to denote Saint James the Great, the brother of John the Apostle. It was also the tradition that Saint James (Santiago) had traveled to the Iberian Peninsula during his life and was buried there. The name is also complicated in Spanish in that Jaime and Jacobo are modern versions of James.
Variants of Santiago include Iago (a common Galician language name), and or Tiago (a common Portuguese language name). The common name James has many forms in Iberia, including Xacobo or Xacobe (in Galician), Jaume, Xaume, Jaime, Jacobo, and Diego (in Spanish). Despite being a cognate, does not refer to Saint Jacob but to Saint Didacus of Alcalá.
Santiago is also the patron saint of Spain and Galicia, after whom many cities have been named in Spain itself and throughout its former empire, such as:
"Santi" is the nickname for Santiago, although "Sandy" is frequently used in English-speaking countries.