Globally, William Barry (William Barry 
) is a rare male first name. The given name William Barry is habitual in Reunion, where it is quite a common boy's name, and Philippines, where it is an extremely rare dominantly boy's, but seldom female name. Very seldom, William Barry is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| William Barry | Brunei, Spain, Philippines, Reunion, Ireland |
| william barry owen American entertainment industry pioneer, US (b. 1860) |
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