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Dyllan

♂ Boy

Pronounced DIL-an /ˈdɪl.ən/High

Meaning: A spelling of Dylan — from Welsh, 'son of the sea; the sea; the tide; a great wave'Low

In 30 seconds: Son of the sea; the sea; the tide: Dyllan spells Dylan. Lyrical, classic, and warm.

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Origin LowWelsh

MeaningA spelling of Dylan — from Welsh, 'son of the sea; the sea; the tide; a great wave'

U.S. rank (2025)#7321 ↘ Falling

2025 U.S. births11 boys (0.00% of U.S. boys)

Peak year1999

Total births (all-time)≈ 3,301

Popularity in the U.S. · SSA data

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 spelling of Dylan — from Welsh, 'son of the sea; the sea; the tide; a great wave' — a figure in Welsh mythology and the name of the poet Dylan Thomas. A lyrical, classic name (said 'DIL-an'; nickname Dyl).

In the U.S. it appears as a variant spelling. Rare in this form, son-of-the-sea at the root, and classic.

Did you know? Dylan means 'son of the sea; the sea; the tide' in Welsh (a sea-god in Welsh myth, and the poet Dylan Thomas) — Dyllan is a spelling, lyrical and modern (said 'DIL-an').

Overall data confidence 50%

References — Dylan — Welsh etymology

Variations

DylanDillonDyllon

Nicknames

Dyl

Famous Bearers

Famous bearers coming soon.

If you like Dyllan…

Dylan— the standard spelling

Dillon— a fellow spelling

Declan— a sound-neighbor Celtic boys' name

Dilan— another Welsh name

Tegan— shares Dyllan's Welsh roots

Explore names like Dyllan

By themewelsh

By meaningSea / Water

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Frequently Asked

What does the name Dyllan mean?

Dyllan spells Dylan — Welsh 'son of the sea; the sea; the tide'.

How do you pronounce Dyllan?

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

Is Dyllan a boy or girl name?

Dyllan is a boy's name.

How popular is Dyllan?

Dyllan is a rare spelling in the U.S.