Holding steady.
Popularity of Sidni since 1949
Babies named Sidni per year in U.S. Social Security records.
Data table (by decade)
| Decade | Girls |
|---|---|
| 1940s | 5 |
| 1950s | 0 |
| 1960s | 0 |
| 1970s | 0 |
| 1980s | 8 |
| 1990s | 112 |
| 2000s | 99 |
| 2010s | 12 |
| 2020s | 0 |
Meaning & origin
Sidni, a modern spelling variant of Sydney, first appeared in U.S. birth records in 1949. It saw its peak usage in 1995, and by 2025 it did not rank among the top 1000 names, reflecting a stable but low frequency. As a feminine variant of the French place name Saint-Denis, Sidni represents the trend of adapting place names into given names, particularly in the 1990s. Despite its low rank, the name maintains a consistent if modest presence, appealing to parents seeking a familiar yet distinctive alternative.
Sidni is a modern spelling variant of Sydney, which itself originates from the French Saint-Denis, referring to the city in France. The name was adopted as a given name in the English-speaking world, particularly as a feminine form, and gained popularity in the late 20th century.
Nicknames & variants
Nicknames: Sid
Sibling names for Sidni
Names that share Sidni's style, for a brother or sister.

