MallowbyNames

Osa

OH-sah · Of uncertain origin; possibly derived from Old Norse meaning 'god' or Irish meaning 'deer'.

2025 rank (girls)
#10,107
Babies named in 2025
9
Peak popularity
1892
2025 frequency
1 in 178,585 girls
Usually for
Girls
Trend
Rising since 2015

A 1890s favorite, climbing again.

Popularity of Osa since 1880

Babies named Osa per year in U.S. Social Security records.

714211880192019602000Most births 1892GirlsBoys
GirlsBoys
Data table (by decade)
DecadeGirlsBoys
1880s800
1890s1390
1900s1090
1910s10439
1920s10838
1930s575
1940s310
1950s80
1960s50
1970s00
1980s00
1990s00
2000s00
2010s175
2020s250

Meaning & origin

Osa is a rare and intriguing name with roots possibly in Scandinavia or Ireland. Its earliest recorded use in the U.S. dates to 1880, and it peaked in popularity in 1892. After a century of decline, the name has been rising again since 2015, reflecting a broader revival of vintage names from the 1890s. Today, Osa is given to approximately 1 in 178,585 newborns, a rarity that appeals to parents seeking an uncommon yet simple name. Its top states are not reported due to sparse usage, but its delicate sound and cross-cultural potential give it a quiet charm.

The name Osa has multiple possible origins. It may derive from Old Norse áss ('god'), appearing in names like Åsa. Alternatively, it could be a short form of Irish names containing os ('deer'), such as Oisin. The name saw modest use in the late 19th and early 20th centuries in the United States.

Nicknames & variants

Variants: Åsa

Sibling names for Osa

Names that share Osa's style, for a brother or sister.

Sisters: Mae, Lena, Nora, Ida, Thea

Brothers: Ole, Finn, Sven, Lars, Kai

A parent animal hugging its little one, the personalized name page

O is for Osa, our favorite little girl.

O is for Osa…”

In a Mallowby alphabet book, Osa's letter becomes Osa's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Osa's book

Books for siblings or grandkids? The second book is 15% off.

Questions parents ask

What does the name Osa mean?
Osa is of uncertain origin; it may mean 'god' in Old Norse or 'deer' in Irish.
How popular is the name Osa?
As of 2025, Osa ranks 10,107, with about 1 in 178,585 newborns given the name. Its peak year was 1892.
Is Osa a boy or girl name?
Osa is typically used for girls, though it can be unisex.