| Fullname: | Siuola Simon Lemalu |
| Birth Place: | Samoa |
| Birth Date: | 1981 1, df=yes |
| Weight: | 260 lb |
| Ru Position: | Prop |
| Amatyears1: | ???? |
| Amatyears2: | ???? |
| Amatteam1: | Ardmore Marist |
| Amatteam2: | Waiuku |
| Years1: | 2003-2004 |
| Years2: | 2006-2007 |
| Clubs1: | Otahuhu RFC |
| Clubs2: | CA Brive |
| Apps2: | 5 |
| Points2: | 0 |
| Province1: | Northland |
| Province2: | Counties Manukau |
| Provinceyears1: | 2004-2005 |
| Provinceyears2: | 2006-2013 |
| Provinceapps1: | 21 |
| Provinceapps2: | 76 |
| Provincepoints1: | 20 |
| Provincepoints2: | 8 |
| Super1: | Chiefs |
| Super2: | Chiefs Development |
| Superyears1: | 2008 |
| Superyears2: | 2011 |
| Superapps1: | 2 |
| Superpoints1: | 0 |
| Repyears1: | 2002 |
| Repyears2: | 2003-2011 |
| Repteam1: | New Zealand U-21 |
| Repcaps1: | 5 |
| Repcaps2: | 13 |
| Reppoints1: | 0 |
| Reppoints2: | 5 |
Siuola Simon Lemalu (born 23 January 1981) is a Samoan former rugby union player. He played as a prop.
He debuted in the 2003 Rugby World Cup playing his first cap against Uruguay, at Perth, on 15 October 2003. He played three matches in the tournament. His last cap was against Tonga, at Lautoka, on 13 July 2011. He also played for Northland, Counties Manukau, CA Brive and for Chiefs in the Super Rugby 2008 season. He also played for New Zealand Colts in 2002.[1]
He signed with the Parramatta Two Blues for the 2014 season.[2]