William Abelyan
| Nick Name | The Conqueror |
| DOB | 27 September 1978 |
| Place of Birth | Yerevan |
| National Team | Armenia |
| Height | 5 ft 5 in (1.65 m) |
| Weighted At | Featherweight |
| Stance | Southpaw |
| Reach | 66 in (168 cm) |
William Abelyan is a retired Armenian professional boxer.William was an WBO NABO Featherweight Champion and was a WBO #1 ranked contender. He was named fighter of the year in 2005. Abelyan challenged Scott Harrison for the WBO Featherweight title, but lost. William is now retired from the sport of boxing.