| Isoa Domolailai | |
| Birth Name: | Isoa Ulago Domolailai |
| Birth Place: | Sigatoka, Fiji |
| Weight: | 1200NaN0 |
| Ru Position: | Lock, Flanker |
| Ru Nationalteam: | Fiji |
| Ru Nationalyears: | 2001 - 2007 |
| Ru Nationalcaps: | 13 |
| Ru Nationalpoints: | (0) |
| Ru Clubyears: | 1999 - 2000 2001 - 2001 2001 - 2001 2001 - 2001 2002 - 2004 2004 - 2004 2005 - 2005 2005 - 2005 2006 - 2006 2006 - 2006 2006 - 2006 2006 - 2006 2006 - 2007 2007 - |
| Ru Proclubs: | Nadroga Lautoka Fiji Warriors Fiji Barbarians Marist Poverty Bay Northland Nadroga Stallions Fiji Warriors Calvisano Toulon Tarbes |
| Ru Clubcaps: | 9 11 3 3 15 65 |
| Ru Clubpoints: | (0) (0) (0) (0) (5) (10) |
| Repsevensyears1: | 2001 |
| Repsevensteam1: | Fiji |
| Repsevenscomp1: | Japan |
| Birth Date: | 13 January 1981 |
Isoa Ulago Domolailai (born Sigatoka, 13 January 1981) is a Fijian rugby union footballer. He plays as a lock.
He currently plays for Tarbes in France. Domolailai's first game for Fiji was on 10 November 2001, in a 10–66 loss to Italy. He missed the 2003 Rugby World Cup finals, due to an injury, but was selected again for the 2007 Rugby World Cup finals. He played, as a substitute, in the 12–55 loss to Australia, on 23 September 2007. He wasn't selected since then. Domolailai currently holds 13 caps for the Fijian Squad, having yet to score his first points.