| Hannes Stefansson | |
| Birthname: | Hannes Hlífar Stefánsson |
| Country: | Iceland |
| Birth Date: | 18 July 1972 |
| Birth Place: | Reykjavík, Iceland |
| Grandmaster (1993) | |
| Peakrating: | 2604 (January 2002) |
| Peakranking: | No. 83 (January 2002) |
| Fideid: | 2300087 |
Hannes Hlífar Stefánsson (born 18 July 1972) is an Icelandic chess grandmaster. He has won the Icelandic Chess Championship a record thirteen times.
Born in 1972, Hannes won the World U16 Chess Championship in 1987. He won the Acropolis International in 1993[1] He tied for first to third in the Reykjavik open in 1994, together with Pigusov and Zvjagintsev and tied for 1st–4th with Hedinn Steingrimsson, Yuriy Kryvoruchko and Mihail Marin in the Reykjavik Open tournament 2009.[2] He won the International chess tournament Open Teplice 2015 in the Czech Republic.[3] He is the No. 1 ranked Icelandic player [4]