| Osvaldo Díaz | |
| Fullname: | Osvaldo Javier Díaz Gimenez |
| Birth Date: | 1981 12, df=yes |
| Birth Place: | San Lorenzo, Paraguay |
| Position: | Midfielder |
| Years1: | 2000–2007 |
| Years2: | 2007 |
| Years3: | 2008 |
| Years4: | 2008 |
| Years5: | 2009–2010 |
| Years6: | 2011–2012 |
| Years7: | 2011 |
| Years8: | 2013 |
| Years9: | 2014– |
| Clubs1: | Guaraní |
| Clubs2: | Olimpia |
| Clubs3: | AC Lugano |
| Clubs4: | 12 de Octubre |
| Clubs5: | Guaraní |
| Clubs6: | Independiente FBC |
| Clubs7: | → Sportivo Luqueño (loan) |
| Clubs8: | San Lorenzo |
| Clubs9: | 12 de Octubre |
| Caps1: | 167 |
| Caps2: | 18 |
| Caps3: | 3 |
| Caps4: | 5 |
| Caps5: | 6 |
| Caps6: | 41 |
| Caps7: | 18 |
| Caps9: | 12 |
| Goals1: | 30 |
| Goals2: | 2 |
| Goals3: | 0 |
| Goals4: | 0 |
| Goals5: | 1 |
| Goals6: | 5 |
| Goals7: | 1 |
| Goals9: | 0 |
| Nationalyears1: | 2001 |
| Nationalteam1: | Paraguay U20 |
| Nationalyears2: | 2004 |
| Nationalteam2: | Paraguay U23 |
| Nationalyears3: | 2004 |
| Nationalteam3: | Paraguay |
| Nationalcaps3: | 1 |
| Nationalgoals3: | 0 |
Osvaldo Díaz (born 22 December 1981) is a retired Paraguayan footballer.
Díaz began his career at Club Guaraní before moving in mid 2007 to Olimpia Asunción in the Paraguayan First Division.
On 1 February 2008 he was signed by AC Lugano, where he only played a total of 17 minutes in 3 games.
On 4 August, before the Summer Olympics began, he played in a preparation game against the Portugal of Cristiano Ronaldo in the city of Algarve, resulting in a 5–0 defeat.[1] Diaz was part of the silver medal-winning Paraguayan 2004 Olympic football team, which earned a quarter-final place with two victories in the qualifying round. Having finished second in the league, the squad later beat South Korea in the quarter-finals, and Iraq in the semi-finals, before losing to Argentina in the final.