| Carlos Alvarenga | |
| Birth Date: | 23 September 1982 |
| Birth Place: | Hernandarias, Paraguay |
| Position: | Defender |
| Years1: | 2004–2005 |
| Clubs1: | Sportivo Luqueño |
| Caps1: | 25 |
| Goals1: | 1 |
| Years2: | 2005 |
| Clubs2: | 12 de Octubre |
| Caps2: | 9 |
| Goals2: | 0 |
| Years3: | 2006–2007 |
| Clubs3: | Universitario de Sucre |
| Caps3: | 68 |
| Goals3: | 3 |
| Years4: | 2008 |
| Clubs4: | San José |
| Caps4: | 26 |
| Goals4: | 0 |
| Years5: | 2009 |
| Clubs5: | Sol de América |
| Caps5: | 20 |
| Goals5: | 1 |
| Years6: | 2009–2010 |
| Clubs6: | Sport Huancayo |
| Caps6: | 31 |
| Goals6: | 4 |
| Totalcaps: | 179 |
| Totalgoals: | 9 |
Carlos Alvarenga (born 23 September 1982) is a Paraguayan footballer who played for clubs including Sport Huancayo of the Primera División in Peru.