MallowbyNames

Dyllon

DIL-un · Originally a variant spelling of Dylan, which is traditionally a Welsh name meaning 'son of the sea' or 'born from the ocean', though the precise meaning is debated.

Peak popularity
1992
Usually for
Boys
Trend
Declining since 1992

Declining since 1992.

Popularity of Dyllon since 1987

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

33671001990200020102020Most births 1992Boys
Data table (by decade)
DecadeBoys
1980s25
1990s612
2000s480
2010s136
2020s14

Meaning & origin

Dyllon represents a modern respelling of the well-known Welsh name Dylan, which has deep roots in Celtic mythology as a sea-god figure. The name first appeared in U.S. records in 1987, and its usage peaked in 1992 before entering a declining trajectory that has continued through the latest year on record, 2025. Although it has never ranked in the national top 1000, its peak year of 1992 saw a modest number of births that made it a recognizable alternative to the more common Dylan and Dillon spellings. Dyllon is overwhelmingly chosen for boys, aligning with the masculine tradition of Dylan, and its stylistic similarity to names like Logan and Kylie suggests an appeal among parents seeking a modern twist on a classic Welsh name. The lack of any recorded top states for this spelling indicates it never achieved strong regional concentration, instead appearing sporadically across the country as families embraced its distinctive 'y' and double 'l' spelling.

Dyllon is a modern respelling of the Welsh name Dylan, which appears in the Mabinogion as the son of Arianrhod, associated with the sea. The original Welsh elements 'dy' (great) and 'llanw' (flow, flood) suggest a meaning related to the sea. The '-on' variant spelling gained traction in the United States in the late 20th century, particularly in the 1990s.

Nicknames & variants

Nicknames: Dyl, Dyll

Variants: Dylan, Dillan, Dillon, Dylen

Sibling names for Dyllon

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

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

D is for Dyllon, our favorite little boy.

D is for Dyllon…”

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

Make Dyllon's book

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Questions parents ask

What does the name Dyllon mean?
Dyllon is a variant of Dylan, a Welsh name traditionally meaning 'son of the sea' or 'born from the ocean', though the exact etymology is debated.
How popular is the name Dyllon currently?
According to Social Security data, Dyllon has not ranked in the top 1000 names since at least 2025, and its peak usage was in 1992.
Is Dyllon a boy's name or a girl's name?
Dyllon is traditionally used as a boy's name, consistent with its origin as a variant of Dylan.