| Kristján Vattnes | |
| Nationality: | Icelandic |
| Sport: | Athletics |
| Event: | Javelin throw |
| Birth Date: | 2 September 1916 |
| Birth Place: | Vattarnes, Iceland |
| Death Place: | Reykjavík, Iceland |
Kristján Vattnes (2 September 1916 - 31 December 1992) was an Icelandic athlete. He competed in the men's javelin throw at the 1936 Summer Olympics.[1]