Dilyn

♀ Girl

Pronounced DIL-in /ˈdɪl.ɪn/Medium

Meaning: Dilyn is a modern American respelling in the Dylan family; Welsh Dylan is usually read 'great tide' or 'son of the sea', the name of a sea-linked figure in the Mabinogi. The Dilyn spelling is a contemporary unisex invention, which we note.Low

In 30 seconds: A modern respelling of Dylan, Welsh for 'great tide' (said 'DIL-in'). It is used for girls and boys alike — we note that.

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Origin LowWelsh, American

MeaningDilyn is a modern American respelling in the Dylan family; Welsh Dylan is usually read 'great tide' or 'son of the sea', the name of a sea-linked figure in the Mabinogi. The Dilyn spelling is a contemporary unisex invention, which we note.

U.S. rank (2024)#13893 ↘ Falling

2024 U.S. births6 girls (0.00% of U.S. girls)

Peak year2003

Total births (all-time)≈ 230

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

Dilyn is a contemporary American respelling in the Dylan family. Dylan is Welsh, usually given as 'great tide' or 'son of the sea', and belongs to a figure in the medieval Mabinogi who swam away the moment he was born. Dilyn shifts the vowel and the spelling; it is used for girls and boys alike, and we note the shared use (said 'DIL-in').

It appears only rarely in U.S. records. Rare, crisp, and modern.

Did you know? Welsh Dylan is a sea name — 'great tide' — borne by a figure in the Mabinogi who took to the water as soon as he was born. Dilyn is a modern unisex respelling of it, which we note.

Overall data confidence 36%

References — Dilyn — Dylan-family respelling; Welsh 'great tide'; unisex

Variations

DylanDillynDylin

Nicknames

DillLyn

Famous Bearers

Famous bearers coming soon.

If you like Dilyn…

Dylan— the Welsh name behind Dilyn

Dillon— a like spelling in the same family

Evelyn— a like -lyn ending for girls

Rylan— a like modern unisex pick

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Frequently Asked

What does the name Dilyn mean?

Dilyn is a modern respelling in the Dylan family; Welsh Dylan is usually read 'great tide' or 'son of the sea'.

How do you pronounce Dilyn?

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

Is Dilyn a boy or girl name?

Dilyn is used for both girls and boys; we note the shared use plainly.

How popular is Dilyn?

Dilyn is a rare name for girls in the U.S.