# List of Gaon Album Chart number ones of 2020

The Gaon Album Chart is a South Korean record chart that ranks the best-selling albums and EPs in South Korea. It is part of the Gaon Music Chart, which launched in February 2010. The data is compiled by the Ministry of Culture, Sports and Tourism and the Korea Music Content Industry Association based upon weekly/monthly physical album sales by major South Korean distributors such as Kakao M, YG Plus, Sony Music Korea, Warner Music Korea, Universal Music and Dreamus.

## Weekly charts

| Week ending date | Album | Artist |
| January 4 | The ReVe Festival: Finale | Red Velvet |
| January 11 | Treasure Epilogue: Action to Answer | Ateez |
| January 18 | Love Song | Kim Jae-joong |
| January 25 | Love Song | Kim Jae-joong |
| February 1 | Timeless | Super Junior |
| February 8 | 回:Labyrinth | GFriend |
| February 15 | Reveal | The Boyz |
| February 22 | Map of the Soul: 7 | BTS |
| February 29 | Map of the Soul: 7 | BTS |
| March 7 | Neo Zone | NCT 127 |
| March 14 | It'z Me | Itzy |
| March 21 | Neo Zone | NCT 127 |
| March 28 | Cyan | Kang Daniel |
| April 4 | Self-Portrait | Suho |
| April 11 | I Trust | (G)I-dle |
| April 18 | Season 1. Hideout: Remember Who We Are | Cravity |
| April 25 | Dye | Got7 |
| May 2 | Reload | NCT Dream |
| May 9 | Gateway | Astro |
| May 16 | The Nocturne | NU'EST |
| May 23 | Neo Zone: The Final Round | NCT 127 |
| May 30 | Delight | Baekhyun |
| June 6 | More & More | Twice |
| June 13 | When We Were Us | Super Junior-K.R.Y. |
| June 20 | Go Live | Stray Kids |
| June 27 | Heng:garæ | Seventeen |
| July 4 | Delight | Baekhyun |
| July 11 | Heng:garæ | Seventeen |
| July 18 | 1 Billion Views | Exo-SC |
| July 25 | How You Like That | Blackpink |
| August 1 | Zero: Fever Part.1 | Ateez |
| August 8 | Magenta | Kang Daniel |
| August 15 | The First Step: Chapter One | Treasure |
| August 22 | Not Shy | Itzy |
| August 29 | Season 2. Hideout: The New Day We Step Into | Cravity |
| September 5 | Love Synonym Pt.1: Right for Me | Wonho |
| September 12 | Never Gonna Dance Again: Act 1 | Taemin |
| September 19 | In Life | Stray Kids |
| September 26 | We Are Family | Kim Ho-joong |
| October 3 | Bad Liar | Super Junior-D&E |
| October 10 | The Album | Blackpink |
| October 17 | NCT 2020 Resonance Pt. 1 | NCT |
| October 24 | Semicolon | Seventeen |
| October 31 | Super One | SuperM |
| November 7 | Fatal Love | Monsta X |
| November 14 | The First Step: Chapter Three | Treasure |
| November 21 | Be | BTS |
| November 28 | Journey | Henry |
| December 5 | NCT 2020 Resonance Pt. 2 | NCT |
| December 12 | One-reeler / Act IV | Iz*One |
| December 19 | The Classic Album I – My Favorite Arias | Kim Ho-joong |
| December 26 | NCT 2020 Resonance Pt. 2 | NCT |

## Monthly charts

| Month | Album | Artist | Sales |
| January | Treasure Epilogue: Action to Answer | Ateez | 128,273 |
| February | Map of the Soul: 7 | BTS | 4,114,843 |
| March | Neo Zone | NCT 127 | 723,150 |
| April | Dye | Got7 | 339,737 |
| May | Delight | Baekhyun | 660,826 |
| June | Heng:garæ | Seventeen | 1,207,513 |
| July | 1 Billion Views | Exo-SC | 497,325 |
| August | Magenta | Kang Daniel | 330,824 |
| September | We Are Family | Kim Ho-joong | 441,201 |
| October | NCT 2020 Resonance Pt. 1 | NCT | 1,193,394 |
| November | Be | BTS | 2,655,843 |
| December | NCT 2020 Resonance Pt. 2 | NCT | 705,588 |