# List of Gaon Digital Chart number ones of 2019

The Gaon Digital Chart is a chart that ranks the best-performing singles in South Korea. Managed by the domestic Ministry of Culture, Sports and Tourism (MCST), its data is compiled by the Korea Music Content Industry Association and published by the Gaon Music Chart. The ranking is based collectively on each single's download sales, stream count, and background music use. In mid-2008, the Recording Industry Association of Korea ceased publishing music sales data. The MCST established a process to collect music sales in 2009, and began publishing its data with the introduction of the Gaon Music Chart the following February. With the creation of the Gaon Digital Chart, digital data for individual songs was provided in the country for the first time. Gaon provides weekly (listed from Sunday to Saturday), monthly and yearly charts. Below is a list of singles that topped the weekly and monthly charts.

## Weekly charts

| Week ending date | Song | Artist(s) |
| January 5 | "180 Degrees" (180도) | Ben |
| January 12 | "After You've Gone" (넘쳐흘러) | MC the Max |
| January 19 | "After You've Gone" (넘쳐흘러) | MC the Max |
| January 26 | "After You've Gone" (넘쳐흘러) | MC the Max |
| February 2 | "Fire Up" (이 노래가 클럽에서 나온다면) | Woody |
| February 9 | "Fire Up" (이 노래가 클럽에서 나온다면) | Woody |
| February 16 | "Fire Up" (이 노래가 클럽에서 나온다면) | Woody |
| February 23 | "Twit" (멍청이) | Hwasa |
| March 2 | "Rooftop" (옥탑방) | N.Flying |
| March 9 | "Rooftop" (옥탑방) | N.Flying |
| March 16 | "Lovedrunk" (술이 달다) | Epik High featuring Crush |
| March 23 | "Maybe It's Not Our Fault" (그건 아마 우리의 잘못은 아닐 거야) | Baek Ye-rin |
| March 30 | "Four Seasons" (사계) | Taeyeon |
| April 6 | "Four Seasons" (사계) | Taeyeon |
| April 13 | "Bom" (나만, 봄) | Bolbbalgan4 |
| April 20 | "Boy with Luv" (작은 것들을 위한 시) | BTS featuring Halsey |
| April 27 | "Boy with Luv" (작은 것들을 위한 시) | BTS featuring Halsey |
| May 4 | "Boy with Luv" (작은 것들을 위한 시) | BTS featuring Halsey |
| May 11 | "Goodbye" | Park Hyo-shin |
| May 18 | "For Lovers Who Hesitate" (주저하는 연인들을 위해) | Jannabi |
| May 25 | "If There Was Practice in Love" (사랑에 연습이 있었다면) | Lim Jae-hyun |
| June 1 | "If There Was Practice in Love" (사랑에 연습이 있었다면) | Lim Jae-hyun |
| June 8 | "If There Was Practice in Love" (사랑에 연습이 있었다면) | Lim Jae-hyun |
| June 15 | "To Be Honest" (솔직하게 말해서 나 김나영) | Kim Na-young |
| June 22 | "To Be Honest" (솔직하게 말해서 나 김나영) | Kim Na-young |
| June 29 | "Drunk on Love" (술이 문제야) | Jang Hye-jin and Yoon Min-soo |
| July 6 | "Drunk on Love" (술이 문제야) | Jang Hye-jin and Yoon Min-soo |
| July 13 | "Thank You for Goodbye" (헤어져줘서 고마워) | Ben |
| July 20 | "Thank You for Goodbye" (헤어져줘서 고마워) | Ben |
| July 27 | "All About You" (그대라는 시) | Taeyeon |
| August 3 | "All About You" (그대라는 시) | Taeyeon |
| August 10 | "Remember Me" (기억해줘요 내 모든 날과 그때를) | Gummy |
| August 17 | "So Long" (안녕) | Paul Kim |
| August 24 | "Done for Me" | Punch |
| August 31 | "So Long" (안녕) | Paul Kim |
| September 7 | "So Long" (안녕) | Paul Kim |
| September 14 | "So Long" (안녕) | Paul Kim |
| September 21 | "Workaholic" (워커홀릭) | Bolbbalgan4 |
| September 28 | "Your Shampoo Scent in the Flowers" (흔들리는 꽃들 속에서 네 샴푸향이 느껴진거야) | Jang Beom-june |
| October 5 | "How Can I Love the Heartbreak, You're the One I Love" (어떻게 이별까지 사랑하겠어, 널 사랑하는 거지) | AKMU |
| October 12 | "How Can I Love the Heartbreak, You're the One I Love" (어떻게 이별까지 사랑하겠어, 널 사랑하는 거지) | AKMU |
| October 19 | "How Can I Love the Heartbreak, You're the One I Love" (어떻게 이별까지 사랑하겠어, 널 사랑하는 거지) | AKMU |
| October 26 | "How Can I Love the Heartbreak, You're the One I Love" (어떻게 이별까지 사랑하겠어, 널 사랑하는 거지) | AKMU |
| November 2 | "Fame" | MC Mong featuring Song Ga-in and Chancellor |
| November 9 | "Love Poem" | IU |
| November 16 | "Late Night" (늦은 밤 너의 집 앞 골목길에서) | Noel |
| November 23 | "Blueming" | IU |
| November 30 | "Blueming" | IU |
| December 7 | "Blueming" | IU |
| December 14 | "Blueming" | IU |
| December 21 | "Square (2017)" | Baek Ye-rin |
| December 28 | "Meteor" | Changmo |

## Monthly charts

Key :
| † | Indicates best-performing single of 2019 |
| Month | Song | Artist(s) |
| January | "After You've Gone" (넘쳐흘러) | MC the Max |
| February | "Fire Up" (이 노래가 클럽에서 나온다면) | Woody |
| March | "Rooftop" (옥탑방) | N.Flying |
| April | "Bom" (나만, 봄) | Bolbbalgan4 |
| May | "For Lovers Who Hesitate" (주저하는 연인들을 위해) | Jannabi |
| June | "2002" † | Anne-Marie |
| July | "Drunk on Love" (술이 문제야) | Jang Hye-jin and Yoon Min-soo |
| August | "Remember Me" (기억해줘요 내 모든 날과 그때를) | Gummy |
| September | "So Long" (안녕) | Paul Kim |
| October | "How Can I Love the Heartbreak, You're the One I Love" (어떻게 이별까지 사랑하겠어, 널 사랑하는 거지) | AKMU |
| November | "Love Poem" | IU |
| December | "Blueming" | IU |