MallowbyNames

Aleksi

ah-LEK-see · Defender of mankind.

2025 rank (boys)
#9,714
Babies named in 2025
7
Peak popularity
2023
2025 frequency
1 in 244,011 boys
Usually for
Boys
Trend
Declining since 2022

Declining since 2022, #9,714 for boys today.

Popularity of Aleksi since 1996

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

3710200020102020Most births 2023GirlsBoys
GirlsBoys
Data table (by decade)
DecadeGirlsBoys
1990s117
2000s1234
2010s527
2020s029

Meaning & origin

Aleksi, the Finnish form of Alexis, carries the meaning "defender of mankind," a translation of the Greek Alexios. Its U.S. popularity peaked in 2023, but has been falling since 2022. In 2025, the name ranked 9,714th, with a frequency of about 1 in 244,011 births. Despite its ancient Greek roots, Aleksi has seen a modern resurgence primarily among Finnish-American families and others seeking a distinctive yet approachable alternative to Alexander. The name's trajectory reflects a gentle decline from its recent peak, but it remains a solid choice for those drawn to its melodic sound and strong meaning.

Aleksi is the Finnish form of Alexis, which derives from the Greek name Alexios, meaning "defender" or "helper of mankind." In Finland, Aleksi has been a common given name since the 19th century and is often associated with Saint Alexius, a Christian figure venerated in both Eastern and Western churches. The name gained popularity in the late 20th and early 21st centuries.

Nicknames & variants

Nicknames: Ale, Lexi

Variants: Alexi, Alexis, Aleksy

Sibling names for Aleksi

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

Sisters: Aino, Elina, Helmi, Inka, Sanna, Miia

Brothers: Eero, Mikko, Olli, Sami, Tuomas

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

A is for Aleksi, our favorite little boy.

A is for Aleksi…”

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

Make Aleksi's book

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

Questions parents ask

What does the name Aleksi mean?
Aleksi means "defender of mankind," derived from the Greek name Alexios.
How popular is the name Aleksi?
In 2025, Aleksi ranked 9,714th in the U.S., with approximately 1 in 244,011 newborn boys given the name.
Is Aleksi a boy's name or a girl's name?
Aleksi is almost exclusively used as a boy's name.