Delta

♀ Girl

Pronounced DEL-tuh /ˈdɛl.tə/High

Meaning: fourth letter of Greek alphabet; triangular river mouthHigh

In 30 seconds: Delta is the fourth letter of the Greek alphabet, also meaning the triangular mouth of a river. As a name it evokes adventure, nature, and a classic sense of boldness.

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Origin HighGreek

Meaningfourth letter of Greek alphabet; triangular river mouth

U.S. rank (2025)#2337 ↘ Falling

2025 U.S. births78 girls (0.00% of U.S. girls)

Peak year2019

Total births (all-time)≈ 4,367

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

Delta is the fourth letter of the Greek alphabet (Δ, δ), derived from the Phoenician letter dalet meaning door. A river delta — the triangular alluvial formation at a river's mouth — is named for its resemblance to the Greek capital letter Δ.

Delta has been used as a given name, particularly in the American South and Australia. Australian country singer Delta Goodrem is perhaps the most prominent bearer. Its short, punchy sound and geographic-natural associations give it a modern adventurous quality.

Did you know? In the NATO phonetic alphabet, Delta represents the letter D — meaning that whenever pilots say 'Delta' on the radio, they are speaking a name with 3,000 years of history stretching back to ancient Phoenician and Greek alphabets.

Overall data confidence 90%

Liddell & Scott, Greek-English Lexicon — reference for DeltaBehind the Name: Delta — name etymology reference

Variations

Deltha

Nicknames

Del

Famous Bearers

★Delta Goodrem (1984–present)
Australian singer-songwriter and actress, a long-running coach on The Voice Australia.

If you like Delta…

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Rio— short geographic name used as a given name

Savannah— American geographic name with similar open-land feel

Aurora— Latin nature name with similar classical appeal

Vera— short crisp name of similar two-syllable structure

Explore names like Delta

By themegreek nature two-syllable bold geographic

By meaningSea / Water

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Frequently Asked

What does Delta mean?

Delta is the fourth letter of the Greek alphabet and means the triangular mouth of a river, named for its shape resembling the capital letter Δ.

How do you pronounce Delta?

Delta is pronounced DEL-tuh (/ˈdɛl.tə/), with two syllables.

Is Delta a girl's name?

Delta is used for girls, most famously by Australian singer Delta Goodrem.

How popular is the name Delta?

Delta is uncommon as a given name but is well-known in Australia and gaining curiosity internationally.