Hannes Hlífar Stefánsson (born 18 July 1972) is an Icelandic chess grandmaster.

He has won the Icelandic Chess Championship a record thirteen times.

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.

[update][4] This biographical article relating to an Icelandic chess figure is a stub.