This is a list of films which placed number-one at the South Korean box office during 2015.
| Veteran became the highest grossing film of 2015. |
| # | Date | Film | Gross |
|---|---|---|---|
| 1 | January 4, 2015 | Ode to My Father | $27,888,360 |
| 2 | January 11, 2015 | $18,152,202 | |
| 3 | January 18, 2015 | $20,776,821 | |
| 4 | January 25, 2015 | Gangnam Blues | $19,696,444 |
| 5 | February 1, 2015 | $10,439,156 | |
| 6 | February 8, 2015 | C'est Si Bon | $12,154,727 |
| 7 | February 15, 2015 | Detective K: Secret of the Lost Island | $15,463,353 |
| 8 | February 22, 2015 | $27,947,003 | |
| 9 | March 1, 2015 | Kingsman: The Secret Service | $12,997,201 |
| 10 | March 8, 2015 | $11,544,938 | |
| 11 | March 15, 2015 | The Deal | $12,675,750 |
| 12 | March 22, 2015 | Whiplash | $11,454,184 |
| 13 | March 29, 2015 | Twenty | $12,333,580 |
| 14 | April 5, 2015 | Furious 7 | $14,472,432 |
| 15 | April 12, 2015 | $10,219,469 | |
| 16 | April 19, 2015 | $8,502,444 | |
| 17 | April 26, 2015 | Avengers: Age of Ultron | $25,351,834 |
| 18 | May 3, 2015 | $25,052,745 | |
| 19 | May 10, 2015 | $11,725,297 | |
| 20 | May 17, 2015 | Mad Max: Fury Road | $15,376,958 |
| 21 | May 24, 2015 | $17,547,026 | |
| 22 | May 31, 2015 | $13,983,504 | |
| Rank | Title | Country | Admissions | Domestic gross |
|---|---|---|---|---|
| 1. | Veteran | South Korea | 13,414,009 | US$92.1 million |
| 2. | Assassination | 12,705,700 | US$86.3 million | |
| 3. | Avengers: Age of Ultron | United States | 10,494,499 | US$77.6 million |
| 4. | Ode to My Father | South Korea | 8,915,904 | US$61.2 million |
| 5. | Inside Men | 7,055,342 | US$49.5 million | |
| 6. | The Throne | 6,246,851 | US$42.8 million | |
| 7. | Kingsman: The Secret Service | United States United Kingdom | 6,129,681 | US$44.1 million |
| 8. | Mission: Impossible – Rogue Nation | United States | 6,126,488 | US$42.5 million |
| 9. | Northern Limit Line | South Korea | 6,043,784 | US$39.9 million |
| 10. | Jurassic World | United States | 5,546,792 | US$41.9 million |
| Rank | Title | Admissions | Domestic gross |
|---|---|---|---|
| 1. | Veteran | 13,414,009 | US$92.1 million |
| 2. | Assassination | 12,705,700 | US$86.3 million |
| 3. | Ode to My Father | 8,915,904 | US$61.2 million |
| 4. | Inside Men | 7,055,342 | US$49.5 million |
| 5. | The Throne | 6,246,851 | US$42.8 million |
| 6. | Northern Limit Line | 6,043,784 | US$39.9 million |
| 7. | The Priests | 5,442,128 | US$37.1 million |
| 8. | The Himalayas | 5,129,431 | US$34.6 million |
| 9. | Detective K: Secret of the Lost Island | 3,872,015 | US$26.7 million |
| 10. | Twenty | 3,044,811 | US$20.6 million |