| Billy Mwanza | |
| Fullname: | Billy Mwanza |
| Birth Date: | 21 January 1983 |
| Birth Place: | Chililabombwe, Zambia |
| Height: | 1.76m |
| Position: | Defender |
| Years1: | 2002–2005 |
| Years2: | 2006–2008 |
| Years3: | 2008 |
| Years4: | 2009 |
| Years5: | 2010–2012 |
| Years6: | 2012–2014 |
| Clubs1: | Power Dynamos |
| Clubs2: | Golden Arrows |
| Clubs3: | African Warriors |
| Clubs4: | Changsha Ginde |
| Clubs5: | Zesco United |
| Clubs6: | Nkana |
| Caps1: | 55 |
| Caps2: | 43 |
| Caps3: | 1 |
| Caps4: | 22 |
| Goals1: | 1 |
| Goals2: | 1 |
| Goals3: | 0 |
| Goals4: | 0 |
| Nationalyears1: | 2004–2010 |
| Nationalteam1: | Zambia |
| Nationalcaps1: | 43 |
| Nationalgoals1: | 0 |
Billy Mwanza (born 21 January 1983) is a Zambian former footballer who played as a defender.