| Semo Sititi | |
| Birth Name: | Lemalu Semo Sititi |
| Birth Place: | Moto'otua, Samoa |
| Weight: | 105NaN |
| Children: | Wallace Sititi (son) |
| School: | St Joseph's College, Samoa. |
| Ru Position: | Flanker, Number 8 |
| Ru Amateuryears: | 1990–1999 2000–2001 |
| Ru Amateurclubs: | Marist St Joseph Marist St Pats |
| Ru Nationalteam: | Samoa Pacific Islanders |
| Ru Nationalyears: | 1999–2009 2004–2006 |
| Ru Nationalcaps: | 59 4 |
| Ru Nationalpoints: | (85) (0) |
| Ru Clubyears: | 2000–2001 2001–2002 2002–2004 2004–2005 2005–2006 2006–2009 |
| Ru Proclubs: | Wellington Cardiff Borders Newcastle Borders NTT DoCoMo Red Hurricanes |
| Ru Clubcaps: | 13 15 28 22 20 |
| Ru Clubpoints: | (5) (10) (25) (5) (5) |
| Super14: | Hurricanes |
| Super14years: | 2000 |
| Super14caps: | 5 |
| Super14points: | (0) |
| Birth Date: | 6 March 1974 |
| Repsevensyears1: | 1994–2005 |
| Ru Coachyears: | 2014– |
| Ru Coachclubs: | Samoa U20 |
Semo Sititi (born 6 March 1974) is a rugby union footballer in Samoa. He was born in Motootua.
He is a flanker and currently plays for Ricoh in Japan, having previously played for Celtic League side Border Reivers and Manu Samoa internationally. He made his test debut in 1999 against Japan in Apia, Samoa. Of Manu Samoa's squad of 30 at the 1999 Rugby World Cup Sititi was the only one based in Samoa.
Sititi took over the role of captain of Samoa when Pat Lam retired after the 1999 Rugby Union World Cup. He has also skippered the Samoa 7s team, including a trip to the 2001 Rugby World Cup 7s in Argentina. In 2000, he won a Super 12 contract with the Wellington Hurricanes, making five appearances, he also played 13 times for Wellington in the National Provincial Championship scoring one try.
In 2002 he joined Cardiff and then Borders in Scotland, where he played for two seasons and then signed for the Newcastle Falcons and later returned to Borders in 2005. He played in the 2003 Rugby World Cup and scored a try against the eventual champions England. Semo is Samoa's third most capped player.