MallowbyNames

Glennon

GLEN-on · Of uncertain origin, possibly a variant of Glen or Glennon, meaning 'from the glen' or 'valley dweller'.

Peak popularity
1928
Usually for
Boys
Trend
Holding steady

Holding steady.

Popularity of Glennon since 1912

Babies named Glennon per year in U.S. Social Security records. Raw births topped out in 1957, but relative to how few babies were recorded back then, Glennon's real moment was 1928.

112233192019602000Most births 1957Boys
Data table (by decade)
DecadeBoys
1910s100
1920s243
1930s185
1940s211
1950s220
1960s162
1970s56
1980s49
1990s18
2000s0
2010s0
2020s0

Meaning & origin

Glennon is a name that has seen only modest use, with its peak occurring in 1928 when it recorded 8 births per million. It has remained stable in usage but never entered the top 1000. With Irish origins rooted in the word for 'valley', it carries a simple, nature-inspired feel. The name has not seen a revival and remains a rare choice, often associated with familial or regional ties to Ireland.

Glennon is an Irish name thought to be a variant of Glenn, which itself derives from the Gaelic word 'gleann' meaning 'valley'. It may also be a surname turned given name, with connections to County Roscommon. The name saw modest use in the early 20th century, particularly in the United States, but has remained relatively uncommon.

Nicknames & variants

Nicknames: Glen, Glenn

Variants: Glenon, Glennan

Sibling names for Glennon

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

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

G is for Glennon, our favorite little boy.

G is for Glennon…”

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

Make Glennon's book

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

Questions parents ask

What does the name Glennon mean?
Glennon is generally considered a variant of Glenn, meaning 'valley' in Gaelic, though its exact origin is debated.
How popular is the name Glennon?
Glennon has never ranked in the U.S. top 1000. Its peak year was 1928, when it was recorded 8 times per million births.
Is Glennon a boy or girl name?
Glennon is traditionally a boy's name, though it has occasionally been used for girls.