Declining since 2005.
Popularity of Sydnei since 1988
Babies named Sydnei per year in U.S. Social Security records.
Data table (by decade)
| Decade | Girls |
|---|---|
| 1980s | 15 |
| 1990s | 208 |
| 2000s | 274 |
| 2010s | 130 |
| 2020s | 8 |
Meaning & origin
Sydnei entered the U.S. baby naming scene in 1988 as a spelling variant of the well-established name Sydney. The name reached its peak usage in 2005, and has been declining since that year. Although Sydnei has never ranked in the national top 1000, its unique spelling appealed to parents seeking a distinctive yet familiar sound. In the 2000s, when the name saw its highest use, similar pattern names like McKaylee and Jordyn were also on the rise. The -ei ending offers a modern twist on the traditional -ey ending. Today, Sydnei remains a rare choice, with fewer than a handful of births per year since the mid-2010s.
Sydnei is a respelled variant of Sydney, which derives from the Old English phrase 'sīdan ēge', meaning 'wide island', or from the place name 'Sydenham', meaning 'wide water meadow' in Old English. The spelling Sydnei emerged in the 1980s in the United States as a distinctive form of the more common Sydney. It gained moderate use in the 1990s and early 2000s, particularly for girls.
Nicknames & variants
Nicknames: Syd, Nei
Sibling names for Sydnei
Names that share Sydnei's style, for a brother or sister.

