Seiko
Primarily a boy's name of Japanese origin with 24 recorded births. Also given to 11 girls.
Meaning & Origin
Among U.S. boy's names, Seiko is not in the current national top 1,000. In fact, it is among the rarest names in the SSA dataset — a choice that signals bold individuality.
With records spanning 1921 to 1925, Seiko has a focused history that reflects a particular moment in naming culture rather than a centuries-old tradition.
Seiko is not in the current top 1,000 boy names nationally, making it an uncommon choice — though your state or community may differ.
Seiko is a boy's and girl's baby name of Japanese origin, meaning "force," "truth," or "accomplished" — the specific meaning depends on the kanji characters used to write it. In Japanese, sei (誠) means "sincerity" and ko (子) traditionally means "child," a common suffix in Japanese feminine names.
In the West, Seiko is perhaps best known as the name of the iconic Japanese watchmaker founded in 1881, giving the name a sleek, precision-craft association. As a given name, it carries the elegance and intentionality of Japanese naming — each character chosen for its meaning and sound.
EtymologyShow more
Names travel. They cross oceans, change spelling, shift pronunciation, and accumulate new associations with each culture that adopts them. Seiko is rooted in the Japanese tradition, but its presence in American naming since 1921 means it has been shaped by English phonetics, local customs, and the cultural context of the families who chose it.
Seiko’s rarity (24 recorded births) may indicate it is strongly tied to a specific cultural community or family tradition, rather than part of the broader American naming mainstream.
At a Glance
Popularity Over Time
Seiko has 4+ years of history in the U.S., first appearing in 1921.
Popularity by Decade
| Decade | Births | Avg Rank | Trend |
|---|---|---|---|
| 1920s | 24 | #4254 | — |
The Story of Seiko
A Greatest Generation name
Peaking in 1924, Seiko is a name steeped in history. Boys named Seiko are most likely born between 1921 and 1925.
How rare is Seiko?
With fewer than 500 recorded births, Seiko is an exceptionally rare name — a one-of-a-kind choice.
The journey through the decades
First appeared in the records in 1921, peaked in the 1920s with 24 births that decade.
Year-by-Year Data
View complete yearly data(4 years, 1921–1925)
| Year | Births | Rank |
|---|---|---|
| 1925 | 5 | #4777 |
| 1924 | 7 | #3808 |
| 1923 | 6 | #4172 |
| 1921 | 6 | #4259 |
Source: U.S. Social Security Administration. Showing years with 5+ recorded births.
Seiko as a Girl's Name
Though more common for boys, Seiko has a notable history as a girl's name too, with 11 births since 1919.
Frequently Asked Questions
Is Seiko a boy's or girl's name?
When was Seiko most popular?
How popular is the name Seiko?
Can Seiko be used for both boys and girls?
Explore More
Data source: U.S. Social Security Administration, 1921–1925