| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. E K Einarsson vs J Johannsdottir |
| 1-0 | 27 |
2009 |
Reykjavik Open | B21 Sicilian, 2.f4 and 2.d4 |
| 2. J Johannsdottir vs S Ingason |
| 0-1 | 40 |
2009 |
Reykjavik Open | C42 Petrov Defense |
| 3. J Johannsdottir vs B Sigurdsson |
| 1-0 | 36 |
2009 |
Reykjavik Open | A07 King's Indian Attack |
| 4. U Gasanova vs J Johannsdottir |
| 0-1 | 37 |
2009 |
Reykjavik Open | B28 Sicilian, O'Kelly Variation |
| 5. J Johannsdottir vs K Gudmundsson |
| 0-1 | 66 |
2009 |
Reykjavik Open | B07 Pirc |
| 6. J Johannsdottir vs B J Kristinsson |
| 0-1 | 35 |
2009 |
Reykjavik Open | B22 Sicilian, Alapin |
| 7. S Bjornsson vs J Johannsdottir |
| 1-0 | 29 |
2009 |
Reykjavik Open | D11 Queen's Gambit Declined Slav |
| 8. N Sverrisson vs J Johannsdottir |
| ½-½ | 45 |
2009 |
Reykjavik Open | B42 Sicilian, Kan |
| 9. A Rombaldoni vs J Johannsdottir |
| 1-0 | 17 |
2009 |
Reykjavik Open | B42 Sicilian, Kan |
| 10. S Unnarsson vs J Johannsdottir |
| 1-0 | 40 |
2010 |
Reykjavik Open | B42 Sicilian, Kan |
| 11. J Johannsdottir vs M Chierici |
| 1-0 | 63 |
2010 |
Chess Olympiad (Women) | B70 Sicilian, Dragon Variation |
| 12. J Johannsdottir vs J Kleinert |
| 0-1 | 25 |
2010 |
Reykjavik Open | B00 Uncommon King's Pawn Opening |
| 13. J Johannsdottir vs T Botheim |
| 1-0 | 46 |
2010 |
Reykjavik Open | C53 Giuoco Piano |
| 14. V Machalova vs J Johannsdottir |
| 1-0 | 46 |
2010 |
Chess Olympiad (Women) | B42 Sicilian, Kan |
| 15. H Gardarsson vs J Johannsdottir |
| 0-1 | 42 |
2010 |
Reykjavik Open | D43 Queen's Gambit Declined Semi-Slav |
| 16. J Johannsdottir vs H Thorsteinsdottir |
| 0-1 | 23 |
2010 |
Reykjavik Open | B17 Caro-Kann, Steinitz Variation |
| 17. K Jalaluldeen vs J Johannsdottir |
| 0-1 | 64 |
2010 |
Chess Olympiad (Women) | D52 Queen's Gambit Declined |
| 18. J Johannsdottir vs O Jonsson |
| 0-1 | 23 |
2010 |
Reykjavik Open | B22 Sicilian, Alapin |
| 19. J Johannsdottir vs J Novkovic |
| 0-1 | 39 |
2010 |
Chess Olympiad (Women) | B42 Sicilian, Kan |
| 20. P Tozer vs J Johannsdottir |
| 1-0 | 29 |
2010 |
Reykjavik Open | B10 Caro-Kann |
| 21. J Johannsdottir vs Thi Nhu Y Hoang |
| ½-½ | 73 |
2010 |
Chess Olympiad (Women) | B12 Caro-Kann Defense |
| 22. T Finnbogadottir vs J Johannsdottir |
| 0-1 | 51 |
2010 |
Reykjavik Open | B22 Sicilian, Alapin |
| 23. S Otgonjargal vs J Johannsdottir |
| 1-0 | 34 |
2010 |
Chess Olympiad (Women) | B42 Sicilian, Kan |
| 24. J Johannsdottir vs S Bjornsson |
| 0-1 | 27 |
2010 |
Reykjavik Open | C22 Center Game |
| 25. J Johannsdottir vs J Dworakowska |
| 0-1 | 34 |
2010 |
Chess Olympiad (Women) | B06 Robatsch |