| Lucas Ostiglia | |
| Birth Date: | 3 May 1976 |
| Birth Place: | Buenos Aires, Argentina |
| Height: | 1.880NaN0 |
| Weight: | 99kg (218lb) |
| Ru Position: | Flanker |
| Ru Nationalteam: | Argentina |
| Ru Nationalyears: | 1999-2007 |
| Ru Nationalcaps: | 32 |
| Ru Nationalpoints: | (15) |
| Ru Ntupdate: | 24 September 2007 |
| Ru Clubyears: | 1994-2004 2004-2005 2005-2008 2008-2009 |
| Ru Proclubs: | Hindú Petrarca Agen Hindú |
| Ru Clubupdate: | 10 October 2011 |
| Repsevensyears1: | 1999-2000 |
| Repsevensteam1: | Argentina |
| Repsevenscomp1: | 3 |
| Ru Sevensupdate: | 10 October 2011 |
Lucas Ostiglia (born 3 May 1976, in Buenos Aires) is an Argentine former rugby union footballer. He played as a flanker.
He represented the Argentina national team in 32 occasions, including the 1999, 2003 and 2007 Rugby World Cups.