MallowbyNames

Lennis

LEN-iss · Of uncertain origin; possibly a variant of Lennox or a feminine form of Len

Peak popularity
1917
Usually for
Girls & boys
Trend
Holding steady

Holding steady.

Popularity of Lennis since 1898

Babies named Lennis per year in U.S. Social Security records. Raw births topped out in 1948, but relative to how few babies were recorded back then, Lennis's real moment was 1917.

112233192019602000Most births 1948GirlsBoys
GirlsBoys
Data table (by decade)
DecadeGirlsBoys
1890s170
1900s110
1910s8080
1920s108159
1930s99177
1940s113231
1950s85247
1960s14164
1970s573
1980s058
1990s010
2000s58
2010s010
2020s00

Meaning & origin

Lennis is a name that saw its peak usage in 1917, yet it never broke into the top 1,000 for any given year. First recorded in 1912, it has remained consistently rare, with a stable trajectory indicating it has never experienced a significant surge or decline. Modern parents may encounter this name rarely, as it is not associated with any particular region of the United States; its top states list remains empty, suggesting it has never been concentrated in one area. The rarity of Lennis makes it an obscure choice, with no well-known bearers or established variants. Its potential connection to Scottish place names or the name Leonard gives it a subtle, traditional feel, but its uncertain etymology leaves room for personal interpretation.

Lennis is a rare name of uncertain origin. It may be a variant of Lennox, a Scottish place name meaning "with many elm trees," or a feminine form of Len, itself a short form of Leonard (meaning "brave lion" in Old German) or Leland. Lennis appears in early 20th-century U.S. records but never achieved widespread usage.

Nicknames & variants

Nicknames: Len, Lenny, Niss

Variants: Lennys, Lenniss

Sibling names for Lennis

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

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

L is for Lennis, our favorite little person.

L is for Lennis…”

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

Make Lennis's book

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

Questions parents ask

What does the name Lennis mean?
The meaning of Lennis is uncertain; it may be related to the Scottish place name Lennox, meaning "with many elm trees," or a variant of Len.
How popular is the name Lennis today?
Lennis is extremely rare in 2025; it did not rank in the top 1,000 names and its 1-in-N ratio is unavailable.
Is Lennis a boy or girl name?
Lennis is unisex, though it appeared slightly more often for girls in its early records.