| Birth Date: | 1962 6, df=yes |
| Birth Place: | Apia, Samoa |
| Relatives: | Scott Sio (son) |
| Ru Position: | Prop |
| Amatyears1: | 1988 |
| Amatteam1: | South Island Universities |
| Ru Provinceyears1: | 1988-1989 |
| Ru Province1: | Canterbury |
| Ru Provinceapps1: | 10 |
| Ru Provincepoints1: | 0 |
| Clubs1: | Northern Suburbs |
| Years1: | 1989-1992 |
| Repyears1: | 1990-1992 |
| Repcaps1: | 2 |
| Reppoints1: | 0 |
Tavita G. Sio, also known by his anglicised name David Sio (born Apia, 21 June 1962) is a former Samoan rugby union player. He played as a prop.
He made his debut for Samoa in a test match against Tonga, at Tokyo on 11 April 1990. He was part of the 1991 Rugby World Cup roster. His last international match was in a test match against Fiji, at Suva, on 20 June 1992.
He is the father of Scott Sio, who currently plays for Australia.[1]