Sigurður Th. Jónsson
| Personal information | |
|---|---|
| Born | 23 July 1924 Ystafell, Iceland |
| Died | 13 March 2003 (aged 78) Ystafell, Iceland |
| Sport | |
| Sport | Swimming |
Sigurður Jónsson (23 July 1924 – 13 March 2003) was an Icelandic swimmer. He competed in the men's 200 metre breaststroke at the 1948 Summer Olympics.