| Mario Costas | |
| Fullname: | Mario Alejandro Costas |
| Birth Date: | 24 April 1981 |
| Birth Place: | Santiago del Estero, Argentina |
| Position: | Forward |
| Years1: | 2000−2003 |
| Years2: | 2003−2004 |
| Years3: | 2004 |
| Years4: | 2005 |
| Years5: | 2005 |
| Years6: | 2006 |
| Years7: | 2006 |
| Years8: | 2007 |
| Goals8: | 7 |
| Years9: | 2008 |
| Clubs9: | América de Cali[1] |
| Caps9: | 2 |
| Goals9: | 0 |
| Years10: | 2008 |
| Years11: | 2009–2010 |
| Caps11: | 16 |
| Goals11: | 6 |
| Years12: | 2010 |
| Years13: | 2011 |
| Caps13: | 9 |
| Goals13: | 4 |
| Years14: | 2011−2013 |
| Caps14: | 32 |
| Goals14: | 22 |
| Years15: | 2014 |
| Caps15: | 5 |
| Goals15: | 0 |
| Years16: | 2014 |
| Clubs16: | → PSM Makassar (loan) |
| Caps16: | 10 |
| Goals16: | 3 |
| Pcupdate: | 27 February 2014 |
Mario Alejandro Costas (born April 24, 1981, in Santiago del Estero) is an Argentinian former footballer who plays as a striker.