Sadao
A masculine Japanese name meaning "assisting the right way".
Name Census estimates that about 10 living Americans carry the first name Sadao. The name is used almost exclusively for boys. The average person named Sadao today is around 97 years old, and the year with the single highest number of Sadao births was 1926 (22 babies).
This page is the full Name Census profile for Sadao. Below you will find a gender breakdown showing how the name splits between male and female registrations, a year-by-year popularity chart stretching back to 1880, decade-level totals, the top US states for this name, its meaning and etymology, and a set of frequently asked questions with data-backed answers.
Key insights
- • The typical person named Sadao is about 97 years old today, placing it firmly among the names of earlier generations. Most living Sadaos were born before 1939.
- • Fewer than 100 living Americans are believed to carry the name Sadao. It is among the rarest names in the SSA records.
People living today
10
~ 1 in 34,275,434 Americans
Peak year
1926
22 babies that year
Average age
97
years old
1934 SSA rank
#3,232
Tracked since 1914
Popularity
Sadao: popularity over time
The SSA tracks Sadao from the 1910s through to the 1930s, spanning 3 decades of birth certificate data. The biggest single decade for the name was the 1920s, with 140 total registrations. Usage has dropped considerably from its 1920s peak. The most recent decade brought in only a fraction of the registrations that the name once attracted.
Babies born per year
Decades
Sadao by decade
The table below breaks the full SSA timeline into ten-year windows. Each row shows how many male and female babies were given the name Sadao during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
Geography
Where Sadaos live
Origin
Meaning and history of Sadao
Sadao is a masculine Japanese given name with its roots firmly planted in the historical and cultural traditions of the Land of the Rising Sun. Derived from the Japanese words 'sa' meaning 'respectable' or 'excellent' and 'dao' meaning 'way' or 'path', the name essentially translates to 'respectable way' or 'excellent path'.
The earliest known records of the name Sadao can be traced back to the Heian period (794-1185 CE) in Japan, a golden age for art, poetry, and literature. During this era, the name was often bestowed upon sons from noble families, reflecting the aspiration for them to lead a life of honor and integrity.
In the annals of Japanese history, one of the most renowned individuals bearing this name was Sadao Araki (1877-1966), a revered military leader and politician who served as the Minister of Education and later as the Minister of the Imperial Household during the tumultuous years leading up to World War II.
Another notable figure was Sadao Bekku (1857-1938), a celebrated Buddhist scholar and poet who made significant contributions to the preservation and promotion of traditional Japanese culture and literature.
Across the vast expanse of the Pacific Ocean, the name Sadao also found resonance in the realm of Hawaiian culture. Sadao Bekku (1857-1938), a pioneering educator and linguist, played a pivotal role in establishing the Hawaiian language curriculum in schools and preserving the language's rich heritage.
Moving into the 20th century, Sadao Watanabe (1913-1976) left an indelible mark on the world of Japanese cinema. As a renowned film director and screenwriter, he crafted masterpieces that captured the essence of post-war Japan, earning him widespread critical acclaim and numerous accolades.
More recently, Sadao Abe (1924-2020) stood as a towering figure in the field of mathematics, making groundbreaking contributions to the study of functional analysis and earning the prestigious Wolf Prize in Mathematics for his pioneering work.
These are but a few examples of the illustrious individuals who have carried the name Sadao throughout history, each leaving an enduring legacy in their respective fields and serving as a testament to the name's enduring significance and cultural richness.
People
Sadao + last name combinations
How many people share a full name with Sadao as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with S
Other first names starting with S with a similar number of bearers.
FAQ
Sadao: questions and answers
How many people in the U.S. are named Sadao?
Name Census puts the figure at roughly 10 living Americans. We arrive at this by taking every SSA birth registration for Sadao going back to 1880 and adjusting each cohort for expected survival using CDC actuarial life tables. The result is an age-weighted living-bearer count, not a raw birth total. That works out to about 1 in 34,275,434 US residents.
Is Sadao a common name?
We classify Sadao as "Very Rare". It ranks above 28.5% of all first names in the SSA dataset by living bearers. Across the full history of the data, 244 babies have been registered with this name.
When was Sadao most popular?
The single biggest year for Sadao was 1926, when 22 babies received the name. The fact that the average living Sadao is about 97 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
Is Sadao a male name?
Yes, 100.0% of people registered as Sadao in the SSA data are male. You can see the full per-sex comparison in the gender distribution section above, which includes the latest year rank, birth count, and peak year for each sex.
Where does this data come from?
First-name figures come from the Social Security Administration's national baby name files, which cover every name on a birth certificate from 1880 to 2024. Living-bearer estimates layer in CDC actuarial life tables broken out by sex to account for mortality. The population baseline (342,754,338) is the Census Bureau's latest national estimate. You can read the full calculation on our methodology page.