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Billie

♀ Girl

Pronounced BIL-ee /ˈbɪl.i/High

Meaning: Resolute protector; feminine diminutive of William, from Old High German wil (will, desire) and helm (helmet, protection)High

In 30 seconds: A spirited feminine spin on William, Billie means 'resolute protector' and carries a joyful, unisex rebelliousness. From jazz legend Billie Holiday to pop star Billie Eilish, it's a name for trailblazers.
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Origin HighGermanic, English
MeaningResolute protector; feminine diminutive of William, from Old High German wil (will, desire) and helm (helmet, protection)
U.S. rank (2025)#691 ↗ Rising
2025 U.S. births409 girls (0.02% of U.S. girls)
Peak year1930
Total births (all-time)≈ 103,661

Popularity in the U.S. · SSA data

peak 193018862025

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

History & Origin

Billie originated as a pet form of William (from Old High German Willahelm — wil, will or desire, and helm, helmet or protection) and was applied to both sexes. As a feminine name, it gained traction in the American South and West during the late 19th and early 20th centuries when giving girls masculine nickname-names was fashionable.

Billie reached its 20th-century peak in the 1930s–1940s on the strength of jazz icons and Western heroines. It declined mid-century before a modern revival, entering the top 500 U.S. girls' names in the 2010s. The rise of Billie Eilish as a global pop phenomenon from 2017 onward gave the name a powerful new cultural anchor for a new generation.

Did you know? Billie Holiday — born Eleanora Fagan — chose the name Billie herself as a teenager, inspired by actress Billie Dove. Her adoption of the name helped cement its association with bold, creative women.
Overall data confidence 90%
Behind the Name — Billie — etymology and usageU.S. Social Security Administration — popularity data

Variations

BillyBilleeBelle

Nicknames

BillBee

Famous Bearers

  • ★Billie Holiday (1915–1959)
    American jazz and blues singer, one of the most influential vocalists of the 20th century.
  • ★Billie Eilish (2001–present)
    American singer-songwriter; youngest artist to win all four main Grammy categories in one year.

If you like Billie…

Bobbie— fellow feminine -ie nickname-name with the same boyish, free-spirited charm
Frankie— shares the vintage-yet-modern feminine nickname energy
Georgie— another classic boy's nickname repurposed as a girl's name with the same breezy feel
Sadie— vintage-revival girl's name with the same lively, informal character

Frequently Asked

What does the name Billie mean?

Billie is a feminine diminutive of William, meaning 'resolute protector' from Old High German wil (will) and helm (helmet or protection).

How do you pronounce Billie?

Billie is pronounced BIL-ee /ˈbɪl.i/ — two syllables with stress on the first.

Is Billie a boy or girl name?

Billie is used for both, but it has become predominantly a girls' name in current use, boosted by the fame of Billie Eilish.

How popular is Billie for girls?

Billie has been climbing the U.S. girls' charts since the 2010s and re-entered the top 500 in recent years, fueled by pop culture.