Given name
Seiji
“one who manages the affairs of the state”
Seiji is used as a given name. One Japanese interpretation is “one who manages the affairs of the state.”
Original Japanese成史
Meaning & origin
What it means
One Japanese interpretation is “one who manages the affairs of the state.”
Where it comes from
An origin associated with this spelling is Japanese.
The story
Published U.S. birth records include this spelling as early as 1914. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Seiji through the years
- Babies since 1880
- 517
- 517 boys · 0 girls
- Most popular year
- 2007
- 19 babies
- 2025
- 8
- #9,569 for boys
- 2021–25 vs 2016–20
- −2%
- Steady
By the numbers
In 2025, this name appeared in 8 U.S. birth records for boys, ranking No. 9,569 among boys’ names. Average annual use for boys was 2.5% lower in 2021–2025 than in 2016–2020. Its largest published annual count for boys was 19 in 2007. Published U.S. population figures for this spelling include 624 as a first name in 2020.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
Seiji’s family of names
Seiji has a related form in Seijea. Seiji has a related form in Seijee. Seiji has a related form in Seijey.
Inner ring: spellings · outer: nicknames and forms.
Nicknames & forms 5
Diminutives, pet forms, short forms and variants used alongside the name.
Spellings & scripts 10
The same name written differently, including transliterations into other scripts.
- 成史original script · Japanese
- 清次original script · Japanese
- 成二original script · Japanese
- 誠二original script · Japanese
- 成治original script · Japanese
- 誠司original script · Japanese
- 清治original script · Japanese
- 誠治original script · Japanese
Show 2 moreShow fewer
People named Seiji
- Seiji OzawaJapanese orchestra conductor (1935–2024)
- Seiji HondaJapanese association football playerborn 1976
- Seiji KimuraJapanese association football playerborn 2001
- Seiji KogaJapanese association football playerborn 1979
- Seiji KanekoJapanese association football playerborn 1980
- Seiji MaeharaJapanese politicianborn 1962
- Seiji UedaJapanese astronomerborn 1952
- Seiji AochiJapanese ski jumper (1942–2008)
- Seiji AraJapanese racing driverborn 1974
Listed by how widely each person is written about, which says nothing about the name itself.
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