| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. G Antunac vs M Cebalo |
| 1-0 | 42 |
1963 |
YUG-chJ | A44 Old Benoni Defense |
| 2. G Antunac vs B Ivanovic |
| 1-0 | 39 |
1963 |
YUG-chJ | E69 King's Indian, Fianchetto, Classical Main line |
| 3. G Antunac vs R Ceglar |
| 1-0 | 42 |
1963 |
YUG-chJ | A25 English |
| 4. R Nicevski vs G Antunac |
| 1-0 | 36 |
1963 |
YUG-chJ | B43 Sicilian, Kan, 5.Nc3 |
| 5. G Antunac vs I Bratko |
| ½-½ | 29 |
1963 |
YUG-chJ | C88 Ruy Lopez |
| 6. M Bobotsov vs G Antunac |
| ½-½ | 62 |
1964 |
Zagreb | A72 Benoni, Classical without 9.O-O |
| 7. G Antunac vs E Paoli |
| ½-½ | 55 |
1964 |
Zagreb | D03 Torre Attack (Tartakower Variation) |
| 8. G Antunac vs Kurajica |
| 0-1 | 21 |
1967 |
Tournament | B48 Sicilian, Taimanov Variation |
| 9. G Antunac vs Plachetka |
| 0-1 | 43 |
1969 |
WchT U26 fin-A 16th | D34 Queen's Gambit Declined, Tarrasch |
| 10. G Antunac vs V Tukmakov |
| ½-½ | 62 |
1969 |
WchT U26 fin-A 16th | E69 King's Indian, Fianchetto, Classical Main line |
| 11. G Antunac vs J Piket |
| 0-1 | 31 |
1970 |
Wijk aan Zee | A15 English |
| 12. L Day vs G Antunac |
| 1-0 | 59 |
1970 |
05, Wijk aan Zee | B24 Sicilian, Closed |
| 13. G Antunac vs Ulf Andersson |
 | 1-0 | 42 |
1970 |
Wijk aan Zee (Netherlands) | E91 King's Indian |
| 14. G Antunac vs K H Maeder |
| ½-½ | 48 |
1970 |
Wijk aan Zee | B93 Sicilian, Najdorf, 6.f4 |
| 15. P Van der Weide vs G Antunac |
| ½-½ | 18 |
1973 |
Wijk aan Zee | B93 Sicilian, Najdorf, 6.f4 |
| 16. F Kuijpers vs G Antunac |
| 1-0 | 57 |
1974 |
Hoogovens-B | B32 Sicilian |
| 17. G Antunac vs Keene |
| ½-½ | 16 |
1974 |
Wijk aan Zee II | E12 Queen's Indian |
| 18. Tarjan vs G Antunac |
| ½-½ | 17 |
1974 |
Wijk aan Zee II | B43 Sicilian, Kan, 5.Nc3 |
| 19. Savon vs G Antunac |
| 1-0 | 41 |
1977 |
Lublin | B05 Alekhine's Defense, Modern |
| 20. G Antunac vs L Day |
| 0-1 | 30 |
1978 |
Canadian Open | A15 English |
| 21. G Antunac vs Matulovic |
| 0-1 | 60 |
1979 |
YUG-34ch | A31 English, Symmetrical, Benoni Formation |
| 22. G Antunac vs H Messing |
| ½-½ | 16 |
1979 |
YUG-34ch | C97 Ruy Lopez, Closed, Chigorin |
| 23. G Antunac vs Keene |
| ½-½ | 32 |
1981 |
New | A41 Queen's Pawn Game (with ...d6) |
| 24. G Antunac vs K Burger |
| ½-½ | 15 |
1981 |
New York (USA) | A15 English |
| 25. G Antunac vs Adorjan |
| ½-½ | 54 |
1981 |
New York (USA) | A36 English |