Haruo

Boys' name

Literal meaning not recorded; Japanese origin

Haruo has been given to 376 babies in the U.S. since 1912. It was used fewer than 5 times in 2025, so it doesn't appear in the latest year's list — today it's a genuinely uncommon pick. Its peak year was 1921, with 32 recorded.

Babies named Haruo, 1937

1 in 426,000

Haruo over time, 1880–2025

Boys

Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Haruo: meaning, origin, and history

Literal meaning not recorded; Japanese origin

Japanese

What Haruo means

Haruo is a given name.

Origin, language, and formation

Haruo is used in English. Its origins include Japanese.

American usage and historical context

In the United States, 376 boys were recorded with the name Haruo between 1912 and 1937. Its highest annual count was 32 in 1921; its best national rank was #1,307 in 1921.

Sources & methodologyReferences, data & attribution

Meaning, origin, and language notes draw on the references below.

American popularity figures use published Social Security Administration records for this exact spelling. Counts below five for a name, sex, and year are omitted.

Wiktionary material is available under CC BY-SA 4.0.

How common is Haruo?

Haruo had fewer than 5 recorded uses in 2025, so these figures use 1937, the last year it was published.

Among all babies, 1937: 1 in 426,000; 5 of 2,130,660 births
Among boys only: 1 in 213,000; <0.01% of boys
Rank, 1937: Unranked; Fewer than 5 uses
Coin-flip room size: 295,373 kids; Even odds of a second one

Where Haruo sits on the popularity scale

Rarest published (5 a year)#1 — Liam (20,818)

Chance at least one other child shares the name

If the other children were drawn at random from the 1937 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.

Class of 20Under 1%

Class of 30Under 1%

Grade of 100Under 1%

School of 500Under 1%

Put another way: gather 295,373 children born in 1937 and it's an even bet that one of them is another Haruo. In a class of 30 the chance is Under 1%.

When Haruos were born

Half of everyone ever recorded as Haruo was born before 1923 — so the typical Haruo is around 102 today.

Median birth year: 1923; About 102 years old
Biggest decade: 1920s; 53.5% of all use
Born in the last 25 years: 98.7%; A modern name
Recorded since 1950: 0; People you could plausibly meet

Choose a decade

1920s — 53.5% of all recorded uses (201).

Is Haruo rising or falling?

Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.

Rank vs 1 year ago: —; Not ranked then
Rank vs 5 years ago: New entry; Not ranked then
Rank vs 10 years ago: —; Not ranked then
Births vs 10 years ago: —; Not published both years
Share of its own peak: 0%; Peak was 1921 (32)
Years since peak: 104; Years
Year-to-year steadiness: Shifting; 25.0% average annual change
Best rank ever: #1,307; 1921

Spellings of Haruo

Haruo is not the most common spelling — Harry is, with 56.1% against Haruo's 0.05%.

Harry56.1%423,866
Mario20.0%151,310
Marco10.1%76,578
Arlo3.2%24,245
Carlo2.1%15,920
Dario1.6%11,945
Harmon0.87%6,607
Hardy0.77%5,814

Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.

Where Haruo is used

Across 1910–2025, Haruo was most concentrated in Hawaii — about 1 in 2,273 boys, against 1 in 58,820 across all states with data. It was least common in California (1 in —).

044 per 100,000

State popularity map

Most concentrated

1Hawaii1 in 2,273
2California1 in —

Shading is the share of that state's recorded boys given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings. Haruo has too little recent state data to map, so this covers all years from 1910.

Haruo by the numbers

The raw record for each sex the name is used for.

As a boy's name

Rank in 2025: Unranked
Trend vs 5 yrs ago: —
Best rank ever: #1,307; 1921
Peak year: 1921; 32 that year
First recorded: 1912
Last recorded: 1937
All-time count: 376
Count in 2025: Under 5

Names similar to Haruo

Matched on shared beginnings and endings, similar length, and comparable popularity.

Harlo Haron Harel Haroun Haruki Harbor Harlyn Haru Harun Haruto Harvin Harjot Harden Harald Haris Hari Harve Harvest Harman Harsh Harith Hart Harvard Hardin

Sibling names for Haruo

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

For a sister

Elvera Rubie Tressie Lavinia Myrtis Margarette Adell Idella

For a brother

Antone Arlie Burl Dewitt Patsy Milford Odis Warner

Explore around Haruo

Top names of 1921, Haruo's peak year The 1920s in full Other names that peaked in 1921 Boys' names starting with H