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Billy meaning, girlBilly

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Meaning and name origin

Billy \b(il)-ly\ as a girl's name (also used as boy's name Billy), is of Old English and Old German origin, and the meaning of Billy is "determined protector". Billy is a variant of Billie (Old English): originally a nickname for William. Also a variant of Wilhelmina (Old German): the second element of the source phrase literally refers to a helmet.

There are 2 masculine forms of Billy: Bill and William.

Billy has 5 variant forms: Bilee, Billee, Billey, Billi, Billye.


Billy is a very popular first name for females (#1481 out of 4276) and also a very popular surname or last name for all people (#8671 out of 88799) (2000 U.S. Census).

Displayed below is the baby name popularity of the name Billy for girls (2015 statistics).

Top 1000 baby names ranking of Billy name in U.S.

Top 100 baby names ranking of Billy outside U.S.

Displayed below is a comparison of the popularity of the girl name Billy and its variant forms. Variation forms ranked in the Top 1000/100 are Billie, Billy, Billye and Wilhelmina. (2015 statistics).

Top 1000 baby names ranking of Billie, Billy, Billye, Wilhelmina in U.S.

Top 100 baby names ranking of Billie outside U.S.

Similar Names

Billy is also pronounced similarly to Bailey, Bailley, Bailly, Baily, Bayly, Bella and Billa. Other suggested similar baby names are Bell, Belle, Cilly, Gilly, Hilly, Jilly, Lilly, Milly, Tilly and Willy. These names tend to be less commonly used than Billy.


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