Spelling Variants
Sonia vs Sonja: Which Spelling?
Sonia and Sonja are variant spellings of the Greek-derived name Sophia.
Global Rank #5
Sonia
Origin: Latin
Sonia is a diminutive form of Sophia, derived from the Greek word "sophia" (σοφία), meaning "wisdom." The name entered Russian and other Slavic languages as Sonya before spreading internationally as…
Global Rank #35
Sonja
Origin: German
Sonja is a Scandinavian form of Sophia, derived from the Greek word "sophia" meaning "wisdom." The name entered Germanic and Slavic languages through Russian diminutive forms, particularly Sonya, which were…
Which is more popular? Based on real registry rankings, Sonia currently ranks higher globally. Popularity can vary a lot by country — check each name's own page for a full regional breakdown.