Worldwide, 桑佳 (桑佳 
) is a very rare unisex first name. The forename 桑佳 is characteristic of Eastern Asia, particularly China, where it is an extremely rare epicene name. Much less frequently, 桑佳 is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| 桑佳 | China |
Sangjia, Sofia, Sofija, Sofiya, Sofya, Sohvi, Sonia, Sonja, Sonjelle, Sonjo, Sonya, Soňa, Szonja, Sònia, Sônia, Σοφία, Сафія, Сонечка, Сонька, Соня, Соф'Я, Софа, София, Софочка, Софья, Соња, סוניה, סופיה, سونيا, سونیا, صوفيا, सोनिया, সোনিয়া, სოფია, სოფიო, ソニア, ソフィア, 索娜, 索尼娅, and 索菲亚
桑佳 is also a name for the fictitious and mythical characters: Red Sonja , the fictional character; Sonja , the fictional character in the film series Underworld; Sonja Blue , the fictional human; Sonja Ek , the fictional character in the Bert Diaries and Sonja , the fictional character in the novel "A Man Called Ove", among other works.