| César Martínez | |
| Fullname: | César David Martínez |
| Birth Date: | 1986 2, df=y |
| Birth Place: | Luque, Paraguay |
| Height: | 1.81 m |
| Position: | Defender |
| Years1: | 2004–2006 |
| Clubs1: | Sportivo Luqueño |
| Caps1: | 42 |
| Goals1: | 3 |
| Years2: | 2007 |
| Clubs2: | The Strongest |
| Caps2: | 31 |
| Goals2: | 1 |
| Years3: | 2007–2008 |
| Clubs3: | Silvio Pettirossi |
| Caps3: | 12 |
| Goals3: | 1 |
| Years4: | 2009–2011 |
| Clubs4: | Lota Schwager |
| Caps4: | 16 |
| Goals4: | 1 |
| Years5: | 2011 |
| Caps5: | – |
| Goals5: | – |
| Totalcaps: | 101 |
| Totalgoals: | 6 |
César David Martínez (born 26 February 1986) is a former Paraguayan footballer who played as a defender.
He played for clubs like San Lorenzo and Chilean team Lota Schwager.