This is a list of films which placed number-one at the South Korean box office during 2012.
| Date | Film | Gross | ||
|---|---|---|---|---|
| 1 | $3,831,245 | |||
| 2 | Puss in Boots | $4,544,243 | ||
| 3 | Dancing Queen | $3,418,494 | ||
| 4 | Unbowed | $4,754,636 | ||
| 5 | $6,467,355 | |||
| 6 | Nameless Gangster: Rules of the Time | $5,866,826 | ||
| 7 | Howling | $3,533,526 | ||
| 8 | Nameless Gangster: Rules of the Time | $2,495,421 | ||
| 9 | Love Fiction | $4,017,248 | ||
| 10 | Helpless | $4,240,711 | ||
| 11 | Helpless | $3,900,489 | ||
| 12 | Architecture 101 | $3,839,949 | ||
| 13 | Architecture 101 | $3,876,617 | ||
| 14 | Architecture 101 | $3,079,866 | ||
| 15 | Battleship | $4,487,425 | ||
| 16 | Battleship | $3,482,543 | ||
| 17 | The Avengers | $10,792,833 | ||
| 18 | The Avengers | $10,683,493 | ||
| 19 | The Avengers | $7,314,419 | ||
| 20 | The Avengers | $4,074,632 | ||
| 21 | Men in Black 3 | $8,074,440 | ||
| 22 | Men in Black 3 | $3,797,611 | ||
| 23 | The Concubine | $3,393,012 | ||
| 24 | The Concubine | $2,472,604 | ||
| 25 | Miss Conspirator | $1,720,789 | ||
| 26 | The Amazing Spider-Man | $10,904,887 | ||
| 27 | The Amazing Spider-Man | $7,851,008 | ||
| 28 | Deranged | $7,280,644 | ||
| 29 | The Dark Knight Rises | $12,946,284 | ||
| 30 | The Thieves | $12,859,489 | ||
| 31 | The Thieves | $13,287,926 | ||
| 32 | The Thieves | $7,526,259 | ||
| 33 | The Thieves | $5,460,631 | ||
| 34 | The Neighbor | $5,295,570 | ||
| 35 | The Traffickers | $3,633,099 | ||
| 36 | The Bourne Legacy | $3,457,222 | ||
| 37 | Masquerade | $7,313,393 | ||
| 38 | Masquerade | $7,877,673 | ||
| 39 | Masquerade | $9,200,274 | ||
| 40 | Masquerade | $5,629,291 | ||
| 41 | Masquerade | $4,446,804 | ||
| 42 | Masquerade | $3,562,776 | ||
| 43 | Skyfall | $5,925,335 | ||
| 44 | A Werewolf Boy | $6,837,109 | ||
| 45 | A Werewolf Boy | $8,723,686 | ||
| 46 | $5,888,515 | |||
| 47 | A Werewolf Boy | $3,607,400 | ||
| 48 | 26 Years | $4,585,252 | ||
| 49 | 26 Years | $4,177,574 | ||
| 50 | $7,234,239 | |||
| 51 | N/A | N/A | ||
| 52 | The Tower | $5,959,582 |
| Rank | Title | Country | Admissions | Domestic gross |
|---|---|---|---|---|
| 1. | The Thieves | South Korea Hong Kong | 12,983,182 | |
| 2. | Masquerade | South Korea | 12,319,390 | |
| 3. | The Avengers | United States | 7,074,867 | |
| 4. | A Werewolf Boy | South Korea | 6,654,390 | |
| 5. | The Dark Knight Rises | United States United Kingdom | 6,396,528 | |
| 6. | The Grand Heist | South Korea | 4,909,937 | |
| 7. | The Amazing Spider-Man | United States | 4,853,123 | |
| 8. | South Korea | 4,719,872 | ||
| 9. | All About My Wife | 4,598,821 | ||
| 10. | Deranged | 4,515,833 | ||
| Rank | Title | Admissions | Domestic gross |
|---|---|---|---|
| 1. | The Thieves | 12,983,182 | |
| 2. | Masquerade | 12,319,390 | |
| 3. | A Werewolf Boy | 6,654,390 | |
| 4. | The Grand Heist | 4,909,937 | |
| 5. | 4,719,872 | ||
| 6. | All About My Wife | 4,598,821 | |
| 7. | Deranged | 4,515,833 | |
| 8. | Architecture 101 | 4,111,068 | |
| 9. | Dancing Queen | 4,058,225 | |
| 10. | Unbowed | 3,451,025 | |