| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. J Fridjonsson vs J Diez del Corral |
| ½-½ | 38 |
1966 |
Orebro Stud olm fB | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 2. H J Illi vs J Fridjonsson |
| 1-0 | 48 |
1966 |
Orebro Stud olm fB | C31 King's Gambit Declined, Falkbeer Counter Gambit |
| 3. G Geotgelvek vs J Fridjonsson |
| 0-1 | 58 |
1966 |
Orebro Stud olm fB | A25 English |
| 4. J Fridjonsson vs A Scemama |
| ½-½ | 35 |
1966 |
Orebro Stud olm fB | B91 Sicilian, Najdorf, Zagreb (Fianchetto) Variation |
| 5. J Fridjonsson vs D Levy |
| ½-½ | 49 |
1966 |
Orebro Stud olm fB | B78 Sicilian, Dragon, Yugoslav Attack, 10.castle long |
| 6. B Dueno vs J Fridjonsson |
| 1-0 | 38 |
1966 |
Orebro Stud olm fB | B42 Sicilian, Kan |
| 7. J Fridjonsson vs E Nowak |
| ½-½ | 14 |
1966 |
Orebro Stud olm prelim2 | C50 Giuoco Piano |
| 8. J Fridjonsson vs Karpov |
| 0-1 | 25 |
1969 |
01, Stockholm Wch-jr pre | C77 Ruy Lopez |
| 9. P Saariluoma vs J Fridjonsson |
| ½-½ | 19 |
1973 |
Ribe 6 Nations chT | B06 Robatsch |
| 10. J Fridjonsson vs Uddenfeldt |
| 0-1 | 32 |
1973 |
Ribe 6 Nations chT | A00 Uncommon Opening |
| 11. S Buchal vs J Fridjonsson |
| 0-1 | 45 |
1973 |
Ribe 6 Nations chT | B31 Sicilian, Rossolimo Variation |
| 12. J Fridjonsson vs J Kristiansen |
| 0-1 | 40 |
1973 |
Ribe 6 Nations chT | A00 Uncommon Opening |
| 13. I Asmundsson vs J Fridjonsson |
| 1-0 | 31 |
1973 |
ISL-ch | B44 Sicilian |
| 14. S Heim vs J Fridjonsson |
| 1-0 | 29 |
1973 |
Ribe 6 Nations chT | A36 English |
| 15. Velimirovic vs J Fridjonsson |
 | 1-0 | 31 |
1974 |
Reykjavik | B89 Sicilian |
| 16. J Fridjonsson vs I Asmundsson |
| ½-½ | 46 |
1974 |
ISL-ch | A07 King's Indian Attack |
| 17. V Zaltsman vs J Fridjonsson |
| 1-0 | 29 |
1982 |
Reykjavik op | A97 Dutch, Ilyin-Genevsky |
| 18. F T Naes vs J Fridjonsson |
| 1-0 | 44 |
2000 |
Reykjavik op19 | A07 King's Indian Attack |
| 19. D Arngrimsson vs J Fridjonsson |
| 0-1 | 25 |
2000 |
Reykjavik op19 | B40 Sicilian |
| 20. B Thorfinnsson vs J Fridjonsson |
| 1-0 | 40 |
2000 |
Reykjavik op19 | B40 Sicilian |
| 21. J Fridjonsson vs Wojtkiewicz |
 | 0-1 | 56 |
2000 |
Reykjavik op19 | A00 Uncommon Opening |
| 22. J Fridjonsson vs S Bjornsson |
| 1-0 | 91 |
2000 |
Reykjavik op19 | A18 English, Mikenas-Carls |
| 23. I Johannesson vs J Fridjonsson |
| 0-1 | 24 |
2000 |
Reykjavik op19 | D02 Queen's Pawn Game |
| 24. S Bjarnason vs J Fridjonsson |
| 1-0 | 59 |
2000 |
Reykjavik op19 | B30 Sicilian |
| 25. J Fridjonsson vs E K Einarsson |
| 0-1 | 41 |
2000 |
Reykjavik op19 | A35 English, Symmetrical |