Given name
Oona
“one who is pure; chaste”
Oona is a form of Agnes. One Greek interpretation is “one who is pure; chaste.”
Meaning & origin
What it means
In Gaelic use, Oona carries the interpretation “one who is pure; chaste.” Oona is a form of Agnes. One Greek interpretation is “one who is pure; chaste.”
Combines direct and name-family evidence
Where it comes from
Oona is a form of Agnes. An origin associated with Agnes is Greek.
Explained through its name family
How it developed
Oona is used as a form of Agnes.
The story
Published U.S. birth records include this spelling as early as 1942. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Oona through the years
- Babies since 1880
- 1,776
- 0 boys · 1,776 girls
- Most popular year
- 2015
- 131 babies
- 2025
- 62
- #2,768 for girls
- 2021–25 vs 2016–20
- −11%
- Easing
Where it’s given
By the numbers
In 2025, this name appeared in 62 U.S. birth records for girls, ranking No. 2,768 among girls’ names. Average annual use for girls was 10.9% lower in 2021–2025 than in 2016–2020. Its largest published annual count for girls was 131 in 2015. In 2025, New York had the largest reported state-level birth count for girls with this name (10). Published U.S. population figures for this spelling include 1,432 as a first name in 2020.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
Oona’s family of names
In English usage, Oona shares an earlier linguistic root with Una. Oona is a form of Agnes. Oona is an English adaptation of Una.
Inner ring: nicknames and forms · outer: across languages.
Nicknames & forms 7
Diminutives, pet forms, short forms and variants used alongside the name.
Across languages 3
Equivalents and cognates in other languages, plus older forms it grew from.
People named Oona
- Oona ChaplinSpanish actressborn 1986
- Oona O'NeillAmerican-British actress (1925–1991)
- Oona LaurenceAmerican actressborn 2002
- Oona KingBritish politician (born 1967)
- Oona SeveniusFinnish association football playerborn 2004
- Oona SirenFinnish association football playerborn 2001
- Oona KausteFinnish female curler and coachborn 1988
- Oona BrownAmerican ice dancerborn 2004
- Oona AirolaFinnish actress and singerborn 1988
Listed by how widely each person is written about, which says nothing about the name itself.
Similar names
If you love Oona, these share its style, era, origin or sound, from outside its own family.
Ianna
>99% girls
Orla
“the golden queen”
>99% girls
Ita
“one who is thirsty”
>99% girls
Annabel
“graceful and beautiful woman”
>99% girls
Fiona
“one who is fair; a whiteshouldered woman”
>99% girls
Nola
“one who is fair; a white-shouldered woman” · “a champion of the people”
>99% girls
Meara
“one who is filled with happiness” · “filled with joy”
>99% girls
Ariana
“resembling silver” · “one who is holy”
>99% girls