Morio

Boys' name

From Japanese もりお; literal meaning unconfirmed

Morio has been given to 100 babies in the U.S. since 1914. 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 1985, with 9 recorded.

Babies named Morio, 1987

1 in 721,000

Morio 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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Morio: meaning, origin, and history

From Japanese もりお; literal meaning unconfirmed

Japanese

What Morio means

Morio is a given name.

Origin, language, and formation

Morio is used in English. Its origins include Japanese.

Morio comes through Japanese もりお.

American usage and historical context

In the United States, 100 boys were recorded with the name Morio between 1914 and 1987. Its highest annual count was 9 in 1985; its best national rank was #3,418 in 1924.

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 Morio?

Morio had fewer than 5 recorded uses in 2025, so these figures use 1987, the last year it was published.

Among all babies, 1987: 1 in 721,000; 5 of 3,605,072 births
Among boys only: 1 in 373,000; <0.01% of boys
Rank, 1987: Unranked; Fewer than 5 uses
Coin-flip room size: 499,770 kids; Even odds of a second one

Where Morio 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 1987 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 499,770 children born in 1987 and it's an even bet that one of them is another Morio. In a class of 30 the chance is Under 1%.

When Morios were born

Half of everyone ever recorded as Morio was born before 1971 — so the typical Morio is around 54 today.

Median birth year: 1971; About 54 years old
Biggest decade: 1980s; 32.0% of all use
Born in the last 25 years: 55.0%; A modern name
Recorded since 1950: 55; People you could plausibly meet

Choose a decade

1980s — 32.0% of all recorded uses (32).

Is Morio 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 1985 (9)
Years since peak: 40; Years
Year-to-year steadiness: Volatile; 30.9% average annual change
Best rank ever: #3,418; 1924

Spellings of Morio

Morio is not the most common spelling — Mario is, with 31.4% against Morio's 0.02%.

Mario31.4%151,310
Marco15.9%76,578
Marion15.1%72,495
Morris14.7%71,000
Orion4.8%23,120
Morton2.6%12,336
Dario2.5%11,945
Orin1.3%6,283

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 Morio is used

Across 1910–2025, Morio was most concentrated in Hawaii — about 1 in 100,000 boys, against 1 in 113,262 across all states with data.

11 per 100,000

State popularity map

Most concentrated

1Hawaii1 in 100,000

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. Morio has too little recent state data to map, so this covers all years from 1910.

Morio 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: #3,418; 1924
Peak year: 1985; 9 that year
First recorded: 1914
Last recorded: 1987
All-time count: 100
Count in 2025: Under 5

Names similar to Morio

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

Mordy Mory Moritz Cario Morty Morry Mori Kario Morad Moran Mordcha Morocco Morgon Moriah Moris Mort Amario Morell Morse Mordche Ilario Azario Morgun Morey

Sibling names for Morio

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

Linsey Candis Kristan Santana Chiquita Kandice Daniel Domonique

For a brother

Whitney Shea Derik Derrell Brenton Antoine Jerrod Darell

Explore around Morio

Top names of 1985, Morio's peak year The 1980s in full Other names that peaked in 1924 Boys' names starting with M