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Thy

Girls' name

Variant of Thi

Thy has been given to 366 babies in the U.S. since 1979. 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 1991, with 18 recorded.

Babies named Thy, 2018

1 in 703,000

Thy over time, 1880–2025

Girls
0510152018801900192019401960198020002020

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Thy: meaning, origin, and history

Variant of Thi

Deeper origin not confirmed in the cited records

What Thy means

Thy is a variant of Thi.

Documented naming usage and pronunciation

Thy is used in Vietnamese.

Another recorded pronunciation is /tʰi˧˧/ and /tʰɪj˧˧/ for Thy.

Meaning behind the documented name family

The name developed through Thy → Thi. The family’s meaning is “poetry, poem, verse”, recorded in the naming reference for Thi.

Related names and everyday forms

Related names include Thi.

American usage and historical context

In the United States, 366 girls were recorded with the name Thy between 1979 and 2018. Its highest annual count was 18 in 1991; its best national rank was #4,930 in 1982.

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.

How common is Thy?

Thy had fewer than 5 recorded uses in 2025, so these figures use 2018, the last year it was published.

Among all babies, 2018
1 in 703,000
5 of 3,516,853 births
Among girls only
1 in 340,000
<0.01% of girls
Rank, 2018
Unranked
Fewer than 5 uses
Coin-flip room size
487,541 kids
Even odds of a second one

Where Thy 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 2018 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 487,541 children born in 2018 and it's an even bet that one of them is another Thy. In a class of 30 the chance is Under 1%.

When Thys were born

Half of everyone ever recorded as Thy was born before 1996 — so the typical Thy is around 29 today.

Median birth year
1996
About 29 years old
Biggest decade
1980s
29.0% of all use
Born in the last 25 years
55.7%
A modern name
Recorded since 1950
366
People you could plausibly meet
Choose a decade

1980s — 29.0% of all recorded uses (106).

Is Thy 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 1991 (18)
Years since peak
34
Years
Year-to-year steadiness
Volatile
31.8% average annual change
Best rank ever
#4,930
1982

Where Thy is used

Across 1910–2025, Thy was most concentrated in California — about 1 in — girls, against 1 in 232,069 across all states with data.

00 per 100,000

Most concentrated

  1. 1California1 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. Thy has too little recent state data to map, so this covers all years from 1910.

Thy around the world

Where Thy 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.

  • England & Wales
    2011–2011
    #5,785
    in 2011
  • France
    1984–1986
    #3,218
    in 1986
  • Canada
    1992–1992
    #2,433
    in 1992
  • South Australia
    1989–1999
    #729
    in 1999

Popularity data from Office for National Statistics, Institut national de la statistique et des études économiques, Statistics Canada and Consumer and Business Services (South Australia). ONS data under Open Government Licence v3.0. INSEE data under Licence Ouverte / Etalab 2.0. StatCan data under Statistics Canada Open Licence. CBS SA data under CC BY 4.0.

Thy 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
#4,930
1982
Peak year
1991
18 that year
First recorded
1979
Last recorded
2018
All-time count
366
Count in 2025
Under 5

Names similar to Thy

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

ThyriThyraRuthyThymeDarthyThyriiWorthyThydaWealthyThyrzaDorethyThyrieDorathyDarothyThyaisBethyDorthyKimothyTimothyMarthyThylaneTamathyLeathyCathy

Sibling names for Thy

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 Thy

Top names of 1991, Thy's peak yearThe 1990s in fullOther names that peaked in 1982Girls' names starting with T