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Dyan

UnisexGirls' nameBoys' name

Variant of Diane

Dyan has been given to 1,928 babies in the U.S. since 1939. 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 1970, with 128 recorded. It's used for both sexes: 94% girls, 6% boys all-time.

Babies named Dyan, 2011

1 in 732,000

Dyan over time, 1880–2025

GirlsBoys
05010015018801900192019401960198020002020

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Girls or boys — Dyan over time

In 2025, Dyan went to 0% girls and 100% boys.

19392025

A sex is only published in years it reached five applications, so a stretch at 0% or 100% means the other side stayed under that floor — not that it was never used.

Dyan: meaning, origin, and history

Variant of Diane

Deeper origin not confirmed in the cited records

What Dyan means

Dyan is a variant of Diane.

Origin, language, and formation

Dyan is used in English.

Related names and everyday forms

Related names include Diane.

American usage and historical context

In the United States, 1,804 girls were recorded with the name Dyan between 1939 and 2011. Its highest annual count was 128 in 1970; its best national rank was #980 in 1970.

In the United States, 124 boys were recorded with the name Dyan between 1989 and 2025. Its highest annual count was 10 in 2023; its best national rank was #6,286 in 1992.

Over 5 years its rank rose, from #12,562 in 2020 to #9,133 in 2025. Over 10 years its rank rose, from #12,576 in 2015 to #9,133 in 2025.

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 Dyan?

Dyan had fewer than 5 recorded uses in 2025, so these figures use 2011, the last year it was published.

Among all babies, 2011
1 in 732,000
5 of 3,657,935 births
Among girls only
1 in 352,000
<0.01% of girls
Rank, 2011
Unranked
Fewer than 5 uses
Coin-flip room size
507,099 kids
Even odds of a second one

Where Dyan sits on the popularity scale

Rarest published (5 a year)#1 — Olivia (13,544)

Chance at least one other child shares the name

If the other children were drawn at random from the 2011 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 507,099 children born in 2011 and it's an even bet that one of them is another Dyan. In a class of 30 the chance is Under 1%.

When Dyans were born

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

Median birth year
1971
About 54 years old
Biggest decade
1970s
36.4% of all use
Born in the last 25 years
9.0%
Mostly a past generation
Recorded since 1950
1,733
People you could plausibly meet
Choose a decade

1970s — 36.4% of all recorded uses (656).

Is Dyan 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 1970 (128)
Years since peak
55
Years
Year-to-year steadiness
Volatile
27.1% average annual change
Best rank ever
#980
1970

Spellings of Dyan

Dyan is not the most common spelling — Diane is, with 17.6% against Dyan's 0.06%.

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 Dyan is used

Across 1910–2025, Dyan was most concentrated in California — about 1 in 100,000 girls, against 1 in 167,826 across all states with data. It was least common in Wisconsin (1 in —).

01 per 100,000

Most concentrated

  1. 1California1 in 100,000
  2. 2Massachusetts1 in 100,000
  3. 3New Jersey1 in 100,000
  4. 4New York1 in 100,000
  5. 5Pennsylvania1 in 100,000
  6. 6Illinois1 in —
  7. 7Indiana1 in —
  8. 8Michigan1 in —

Shading is the share of that state's recorded girls 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. Dyan has too little recent state data to map, so this covers all years from 1910.

Dyan around the world

Where Dyan ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.

  • Scotland
    1979–1986
    #485
    in 1986
  • South Australia
    1952–1977
    #637
    in 1977

Popularity data from National Records of Scotland and Consumer and Business Services (South Australia). NRS data under Open Government Licence v3.0. CBS SA data under CC BY 4.0.

Dyan by the numbers

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

As a girl's name

Rank in 2025
Unranked
Trend vs 5 yrs ago
—
Best rank ever
#980
1970
Peak year
1970
128 that year
First recorded
1939
Last recorded
2011
All-time count
1,804
Count in 2025
Under 5

As a boy's name

Rank in 2025
#9,133
Trend vs 5 yrs ago
Up 3,429
Best rank ever
#6,286
1992
Peak year
2023
10 that year
First recorded
1989
Last recorded
2025
All-time count
124
Count in 2025
8

Names similar to Dyan

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

DyaniDyannaCyanAyanDyanaBayanRayanRhyanLayanDyannMaryanAryanRiyanBryanDyanneDyaneMayanKyanLilyanLillyanMaayanDyamondRyanKayan

Sibling names for Dyan

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

Explore around Dyan

Top names of 1970, Dyan's peak yearThe 1970s in fullOther names that peaked in 1970Girls' names starting with D