Given name
Tadashi
“one who is accurate”
Tadashi is used as a given name. One Japanese interpretation is “one who is accurate.”
Original Japanese侃
Meaning & origin
What it means
One Japanese interpretation is “one who is accurate.”
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 1912. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Tadashi through the years
- Babies since 1880
- 676
- 676 boys · 0 girls
- Most popular year
- 1922
- 35 babies
- 2025
- 11
- #7,620 for boys
- 2021–25 vs 2016–20
- −12%
- Easing
By the numbers
In 2025, this name appeared in 11 U.S. birth records for boys, ranking No. 7,620 among boys’ names. Average annual use for boys was 12.1% lower in 2021–2025 than in 2016–2020. Its largest published annual count for boys was 35 in 1922. Published U.S. population figures for this spelling include 536 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.
Tadashi’s family of names
Tadashi has a related form in Tadashea. Tadashi has a related form in Tadashee. Tadashi has a related form in Tadashey.
Inner ring: spellings · outer: nicknames and forms.
Nicknames & forms 5
Diminutives, pet forms, short forms and variants used alongside the name.
Spellings & scripts 13
The same name written differently, including transliterations into other scripts.
People named Tadashi
- Tadashi NakamuraJapanese association football player and managerborn 1971
- Tadashi ImaiJapanese film director (1912–1991)
- Tadashi KoyaJapanese association football playerborn 1970
- Tadashi YanaiJapanese businessmanborn 1949
- Tadashi TakedaJapanese association football playerborn 1986
- Tadashi SasakiJapanese association football playerborn 1966
- Li ShanlanChinese mathematician (1810-1882)1811–1882
- Tadashi MaedaJapanese admiral1898–1977
- Tadashi AbeAikido master1926–1984
Characters named Tadashi: Tadashi Hamada (Disney's Big Hero 6).
Listed by how widely each person is written about, which says nothing about the name itself.
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