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Home › Baby Names Directory › Gillian

Gillian

♀ Girl

Pronounced JIL-ee-un /ˈdʒɪliən/High

Meaning: English feminine form of Julian, from Latin Julianus, derived from Julius, the Roman family name possibly meaning 'youthful' or 'descended from Jove (Jupiter).'High

In 30 seconds: A graceful English classic derived from Julian and Julius, Gillian has been a staple of British naming since the Middle Ages. Poised, literary, and quietly sophisticated, it ages beautifully.
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Origin HighLatin, English
MeaningEnglish feminine form of Julian, from Latin Julianus, derived from Julius, the Roman family name possibly meaning 'youthful' or 'descended from Jove (Jupiter).'
U.S. rank (2025)#3307 ↘ Falling
2025 U.S. births47 girls (0.00% of U.S. girls)
Peak year1999
Total births (all-time)≈ 16,058

Popularity in the U.S. · SSA data

peak 199919222025

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

Gillian is the English feminine form of Julian, which derives from the Latin Julianus, a derivative of the Roman family name Julius. The Julius clan claimed descent from Iulus, son of Aeneas, with the name possibly linked to the Greek ioulos meaning 'downy-bearded' and popularly interpreted as 'youthful.' The form Gillian appeared in England during the Middle Ages as a vernacular rendering, often written Jilian or Jillian. It was extremely popular in medieval and Tudor England.

By the 17th century, Gillian had fallen out of fashion in England, only to be revived strongly in the mid-20th century. It remained a top girls' name in the United Kingdom through the 1950s and 1960s. The spelling Jillian became common in North America. Notable bearers have kept the name alive in popular culture, and it retains a classic, literary feel today.

Did you know? In medieval England, Gillian was so common that it gave rise to the expression 'every Jack and Gill' — the female counterpart to Jack — showing just how ubiquitous this name once was.
Overall data confidence 91%
Behind the Name — Gillian — etymology from Latin JulianusOxford Dictionary of English Christian Names — medieval English usage history

Variations

JillianJilianJulianaGiuliana

Nicknames

GillJillGillie

Famous Bearers

  • ★Gillian Anderson (1968–present)
    American-British actress acclaimed for her role as Dana Scully in The X-Files.
  • ★Gillian Flynn (1971–present)
    American author known for the bestselling thriller Gone Girl.

If you like Gillian…

Jillian— alternate spelling of the same name with identical pronunciation
Juliana— the fuller Latinate form sharing the same Julian root
Vivian— three-syllable English classic with the same vintage charm
Marian— medieval English feminine name with comparable rhythm and literary history

Explore names like Gillian

By themeenglishlatinclassicvintageliterarymedieval
By meaningYouth

All themes →All meanings →All origins →

Frequently Asked

What does the name Gillian mean?

Gillian means 'youthful' or 'of the Julian family,' derived from the Latin Julianus and the Roman clan name Julius.

How do you pronounce Gillian?

Gillian is pronounced JIL-ee-un /ˈdʒɪliən/ — three syllables, stress on the first.

Is Gillian a boy or girl name?

Gillian is used almost exclusively as a girls' name; it is the established feminine form of Julian.

How popular is Gillian?

Gillian was very popular in the UK in the mid-20th century. It remains in use today with classic, understated appeal in English-speaking countries.

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