Seiji
A boy's name of Japanese origin with 509 recorded U.S. births.
Meaning & Origin
A male given name from Japanese.
Seiji is a boy's baby name of Japanese origin, written with various kanji combinations — commonly sei ('pure' or 'correct') and ji ('two' or 'second,' or 'govern'). The meaning shifts based on the chosen characters, allowing families to embed personal wishes directly into the name's written form.
Seiji Ozawa, the legendary Japanese conductor who led the Boston Symphony Orchestra for 29 years, is perhaps the most internationally recognized bearer. With 509 recorded U.S. births, Seiji is a quietly distinguished name bridging Japanese musical excellence and cultural heritage.
EtymologyShow more
Phonetically, Seiji belongs to a cluster of names characterized by their open, approachable ending — ending on a vowel softens the overall impression. At two syllables, it has a two-beat rhythm that is easy to call across a room and natural in conversation.
Within the Japanese naming tradition, names with similar sound structures often share underlying etymological patterns. Exploring Japanese names on this site may surface connections that illuminate Seiji’s linguistic neighborhood.
At a Glance
Popularity Over Time
Seiji was #7430 twenty years ago and has since drifted to #9694, but its charm endures.
Popularity by Decade
| Decade | Births | Avg Rank | Trend |
|---|---|---|---|
| 2020s | 41 | #9541 | ▼ |
| 2010s | 106 | #8428 | — |
| 2000s | 116 | #7054 | ▲ |
| 1990s | 75 | #7305 | ▲ |
| 1980s | 31 | #5565 | ▲ |
| 1970s | 28 | #5856 | ▲ |
| 1930s | 22 | #3748 | ▼ |
| 1920s | 74 | #3549 | ▲ |
| 1910s | 16 | #4135 | — |
The Story of Seiji
A Gen Z name
Peaking in 2007, Seiji is a name that defines a generation. Boys named Seiji are most likely born between 1997 and 2017.
How rare is Seiji?
Only about 1 in every 450,000 babies born in 2024 was named Seiji — a truly uncommon choice.
The journey through the decades
First appeared in the records in 1914, gained momentum through the mid-century, peaked in the 2000s with 116 births that decade, and has gracefully settled into a quieter chapter.
Seiji by the numbers
- Would fill 11 school buses
- Meeting one Seiji per day would take 1.4 years
Year-by-Year Data
View complete yearly data(59 years, 1914–2024)
| Year | Births | Rank |
|---|---|---|
| 2024 | 8 | #9694 |
| 2023 | 9 | #8804 |
| 2022 | 7 | #10663 |
| 2021 | 7 | #10591 |
| 2020 | 10 | #7952 |
| 2019 | 5 | #13797 |
| 2018 | 6 | #11894 |
| 2017 | 12 | #7027 |
| 2016 | 7 | #10548 |
| 2015 | 11 | #7437 |
| 2014 | 12 | #6983 |
| 2013 | 10 | #7999 |
| 2012 | 15 | #5940 |
| 2011 | 16 | #5635 |
| 2010 | 12 | #7024 |
| 2009 | 7 | #10780 |
| 2008 | 13 | #6700 |
| 2007 | 19 | #4951 |
| 2006 | 14 | #6041 |
| 2005 | 13 | #6157 |
Source: U.S. Social Security Administration. Showing years with 5+ recorded births.
Frequently Asked Questions
Is Seiji a boy's or girl's name?
When was Seiji most popular?
How popular is the name Seiji?
Explore More
Data source: U.S. Social Security Administration, 1914–2024