Meaning and name origin
Billy \b(il)-ly\ as a boy's name (also used as girl's name Billy), is of English and Old German origin. Billy is a variant of Bill (English): nickname for William, used occasionally as an independent name.
Billy has 1 variant form: Billie.
Billy is a very popular first name for males (#73 out of 1220, Top 6%) and also a very popular surname or last name for all people (#8671 out of 88799, Top 10%) (2000 U.S. Census).
Displayed below is the baby name popularity of the name Billy for boys (2014 statistics).
Displayed below is a comparison of the popularity of the boy name Billy and its variant forms. Popular variation forms ranked in the Top 1000/100 are William (#5), Billy (#794), Billie and Bill. (2014 statistics).
Billy is also pronounced similarly to Bailey, Baily, Baley and Bayly. Other suggested similar baby names are Bell, Bille, Birly, Bly, Byll and Willy. These names tend to be less commonly used than Billy.