MallowbyNames

Dylann

DIL-uhn · Of uncertain origin; likely a modern feminine respelling of Dylan.

2025 rank (girls)
#6,838
Babies named in 2025
16
Peak popularity
2016
2025 frequency
1 in 100,454 girls
Usually for
Girls & boys
Trend
Declining since 2016

Declining since 2016, #6,838 for girls today.

Popularity of Dylann since 1991

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

193756200020102020Most births 2016GirlsBoys
GirlsBoys
Data table (by decade)
DecadeGirlsBoys
1990s8325
2000s26280
2010s431224
2020s13058

Meaning & origin

Dylann is a modern respelling of the Welsh classic Dylan, first recorded in U.S. data in 1991. Its peak came in 2016, when it ranked among the top 7,000 names, but it has been falling in popularity since that year. The name is given to roughly 1 in every 100,454 newborns as of 2025, placing it in rare-use territory. While the original Dylan has deep Welsh roots as a mythological and literary name, Dylann represents a contemporary American reinvention, likely influenced by the fashion for 'ynn' endings. It has been used as a unisex name, though recent data suggests a stronger female association. The name does not have a specific meaning beyond its derivation, and its usage remains uncommon, with no strong regional concentration.

Dylann is a modern spelling variant of Dylan, a name of Welsh origin meaning 'son of the sea.' The Dylan form has been used since the 20th century, but the respelling Dylann emerged in the 1990s in the United States, possibly influenced by similar names like Lynn or Ann. It has been used for both girls and boys, though predominantly for girls in recent decades.

Dylann” around the world

Where Dylann lands in the latest official birth statistics abroad, matched to the U.S. spelling.

  • France

    5

    babies in 2024

Sources: INSEE (France).

Nicknames & variants

Nicknames: Dyl, Lanny, D

Variants: Dylan, Dillan, Dylen

Sibling names for Dylann

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

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

D is for Dylann, our favorite little person.

D is for Dylann…”

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

Make Dylann's book

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

Questions parents ask

What does the name Dylann mean?
Dylann is a modern variant of Dylan, a Welsh name meaning 'son of the sea.' Its specific meaning for the Dylann spelling is not defined separately.
How popular is the name Dylann?
In 2025, Dylann ranked 6,838, with approximately 1 in every 100,454 newborns given the name. Its most popular year was 2016, and its usage has been declining since then.
Is Dylann a boy's or girl's name?
Dylann is used for both boys and girls, though it is more commonly given to girls in recent years.