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Home › Baby Names Directory › Dyllan

Dyllan

♀ Girl

Pronounced DIL-un /ˈdɪl.ən/High

Meaning: A respelled form of Dylan, a Welsh name usually read as 'great tide' or 'born of the sea' (Welsh dy, an intensifying prefix, plus llanw, 'tide; flow'). Dylan is a sea-figure in the medieval Welsh Mabinogi. Used here for a girl, though it leans strongly to boys.Low

In 30 seconds: A sea-swept Welsh classic, respelled: Dyllan carries 'great tide' (said 'DIL-un'). More often a boy's name — we note the lean.
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Origin MediumWelsh
MeaningA respelled form of Dylan, a Welsh name usually read as 'great tide' or 'born of the sea' (Welsh dy, an intensifying prefix, plus llanw, 'tide; flow'). Dylan is a sea-figure in the medieval Welsh Mabinogi. Used here for a girl, though it leans strongly to boys.
U.S. rank (2024)#13904 ↘ Falling
2024 U.S. births6 girls (0.00% of U.S. girls)
Peak year2010
Total births (all-time)≈ 493

Popularity in the U.S. · SSA data

peak 201019912024

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

SSA data updated May 2026. How we source & verify this data.

History & Origin

Dyllan is a modern respelling of the Welsh Dylan, understood as 'great tide' or 'born of the sea' — the name of a sea-child in the Mabinogi, and later of the poet Dylan Thomas. The extra L gives it a softer, more decorative look. Used here for a girl, it stays a strongly boy-leaning name, which we note (said 'DIL-un').

For girls it appears only rarely in the U.S., against far heavier boys' use. Rare, Welsh-rooted, and sea-bright.

Did you know? In the Welsh Mabinogi, Dylan is a child of the sea who takes to the waves the moment he is born — the poet Dylan Thomas later carried the name worldwide. Dyllan is the doubled-L respelling, used here for a girl though it leans strongly to boys, which we note.
Overall data confidence 55%
References — Dyllan — Welsh Dylan; Mabinogi sea-child; respelling

Variations

DylanDillanDylann

Nicknames

DylDilly

Famous Bearers

  • Famous bearers coming soon.

If you like Dyllan…

Dylan— the standard spelling Dyllan restyles
Delaney— a like Celtic-rooted pick
Sloane— a like crisp surname-style name
Dillan— echoes that soft -an sound
Meghan— another Welsh name

Explore names like Dyllan

By themenaturecross-sexrespellingwelsh

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Frequently Asked

What does the name Dyllan mean?

Dyllan respells Dylan, a Welsh name read as 'great tide' or 'born of the sea'.

How do you pronounce Dyllan?

It's said DIL-un /ˈdɪl.ən/ — two syllables, stress on the first.

Is Dyllan a boy or girl name?

Here Dyllan is used as a girl's name, but Dylan and its respellings are usually boys' names — we note the lean.

How popular is Dyllan?

Dyllan is a rare spelling for girls in the U.S.

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