Miguoel Admiraal vs Hjorvar Steinn Gretarsson
Tata Steel Group C Wijk aan Zee NED round 4 2013.01.15
Ruy Lopez: Exchange Variation 1/2-1/2

Alexander Morozevich vs Hjorvar Steinn Gretarsson
European Club Cup Rhodes GRE round 1.2 2013.10.20
Colle System: Rhamphorhynchus Variation 1-0

Hjorvar Steinn Gretarsson vs Jules Moussard
Pro Chess League chess.com INT round 1 2018.01.18
Nimzo-Indian Defense: Classical Variation 1-0

Luka Lenic vs Hjorvar Steinn Gretarsson
Pro Chess League chess.com INT round 3 2018.01.31
Italian Game: Giuoco Piano 1-0

Maxim Matlakov vs Hjorvar Steinn Gretarsson
FIDE World Cup 2021 Krasnaya Polyana (Sochi) RUS round 2.1 2021.07.15
Sicilian Defense: Najdorf Variation 1-0

Loftur Baldvinsson vs Hjorvar Steinn Gretarsson
Reykjavik Open Reykjavik ISL round 1.18 2014.03.04
Sicilian Defense: Taimanov Variation, Bastrikov Variation 0-1

Nils Grandelius vs Hjorvar Steinn Gretarsson
23rd European Teams Terme Catez SLO round 6.16 2021.11.18
Sicilian Defense: Canal Attack, Dorfman Gambit 1/2-1/2

Hjorvar Steinn Gretarsson vs Rafael Vaganian
Politiken Cup Copenhagen DEN round 2.3 2006.??.??
English Opening: Agincourt Defense 0-1

Benny Aizenberg vs Hjorvar Steinn Gretarsson
European Championship Reykjavik ISL round 11 2021.09.05
Caro-Kann Defense 0-1