| William | |
| Fullname: | Gilberto William Fabbro |
| Birth Date: | 30 March 1977 |
| Currentclub: | Operário-PR |
| Position: | Attacking Midfielder |
| Youthyears1: | 1995–1997 |
| Years1: | 1998 |
| Years2: | 1998 |
| Years3: | 1999 |
| Years4: | 2000 |
| Years5: | 2000 |
| Years6: | 2001–2003 |
| Years7: | 2004 |
| Years8: | 2005 |
| Years9: | 2005–2006 |
| Years10: | 2006–2007 |
| Years11: | 2007–2008 |
| Years12: | 2008 |
| Years13: | 2009–2010 |
| Years14: | 2010 |
| Years15: | 2011 |
| Years16: | 2011 |
| Years17: | 2011 |
| Years18: | 2012– |
| Clubs1: | → Ypiranga-RS (Loan) |
| Clubs2: | → Gama (Loan) |
| Clubs3: | → Qingdao Dahua (Loan) |
| Clubs4: | → São José-SP (Loan) |
| Clubs5: | → Gama (Loan) |
| Clubs8: | → Juventude (Loan) |
| Clubs9: | → Tenerife (Loan) |
| Clubs10: | → Juventude (Loan) |
| Caps5: | 9 |
| Caps6: | 63 |
| Caps7: | 30 |
| Caps8: | 11 |
| Caps15: | 2 |
| Goals5: | 1 |
| Goals6: | 8 |
| Goals7: | 0 |
| Goals8: | 2 |
| Goals15: | 1 |
Gilberto William Fabbro or simply William (born March 30, 1977, in Foz do Iguaçu), is a Brazilian attacking midfielder. He currently plays for Operário Ferroviário Esporte Clube.