# List of Gaon Digital Chart number ones of 2015

The Gaon Digital Chart, part of Gaon Music Chart, is a chart that ranks the best-performing songs in South Korea. The data is collected by the Korea Music Content Association. It consists of weekly (listed from Sunday to Saturday), monthly and yearly charts. Below is a list of songs that topped the weekly and monthly charts. The Digital Chart ranks songs according to their performance on the Gaon Download, Streaming, and BGM charts.

## Weekly charts

Key :
| † | Indicates best-performing single of 2015 |
Source: Gaon Digital Chart :
| Week end date | Song | Artist(s) |
| January 3 | "Up & Down" (위아래) | EXID |
| January 10 | "Déjà-Boo" (데자-부) | Jonghyun featuring Zion.T |
| January 17 | "Fire" (화) | Mad Clown featuring Jinsil of Mad Soul Child |
| January 24 | "I Have To Forget You" (슬픔 속에 그댈 지워야만 해) | Jeong Seung-hwan, Park Yoon-ha |
| January 31 | "Cry Again" (또 운다 또) | Davichi |
| February 7 | "Just" (그냥) | Zion.T and Crush |
| February 14 | "You from the Same Time" (같은 시간 속의 너) | Naul of Brown Eyed Soul |
| February 21 | "You from the Same Time" (같은 시간 속의 너) | Naul of Brown Eyed Soul |
| February 28 | "You from the Same Time" (같은 시간 속의 너) | Naul of Brown Eyed Soul |
| March 7 | "Love Mash" (사랑범벅) | MC Mong featuring Chancellor of The Channels |
| March 14 | "Love Mash" (사랑범벅) | MC Mong featuring Chancellor of The Channels |
| March 21 | "Snow of April" (사월의 눈) | Huh Gak |
| March 28 | "Puss" | Jimin with Iron |
| April 4 | "Only You" (다른 남자 말고 너) | Miss A |
| April 11 | "Only You" (다른 남자 말고 너) | Miss A |
| April 18 | "Who's Your Mama?" (어머님이 누구니) | Park Jin-young featuring Jessi |
| April 25 | "Who's Your Mama?" (어머님이 누구니) | Park Jin-young featuring Jessi |
| May 2 | "Loser" | Big Bang |
| May 9 | "Loser" | Big Bang |
| May 16 | "Loser" | Big Bang |
| May 23 | "Heart" (마음) | IU |
| May 30 | "View" | Shinee |
| June 6 | "Bang Bang Bang" (뱅뱅뱅) † | Big Bang |
| June 13 | "Love Me Right" | Exo |
| June 20 | "Shouldn't Have" (이럴거면 그러지말지) | Baek A-yeon featuring Younghyun |
| June 27 | "Shake It" | Sistar |
| July 4 | "If You" | Big Bang |
| July 11 | "Party" | Girls' Generation |
| July 18 | "Come and Goes" (와리가리) | hyukoh |
| July 25 | "Yanghwa BRDG" (양화대교) | Zion.T |
| August 1 | "Wi Ing Wi Ing" (위잉위잉) | hyukoh |
| August 8 | "Let's Not Fall In Love" (우리 사랑하지 말아요) | Big Bang |
| August 15 | "Let's Not Fall In Love" (우리 사랑하지 말아요) | Big Bang |
| August 22 | "Oppa's Car" (오빠차) | Incredivle, Tablo, Jinusean |
| August 29 | "Leon" (레옹) | Park Myeong-soo, IU |
| September 5 | "Leon" (레옹) | Park Myeong-soo, IU |
| September 12 | "Leon" (레옹) | Park Myeong-soo, IU |
| September 19 | "My Type" (취향저격) | iKON |
| September 26 | "Get Some Air" (바람이나 좀 쐐) | Gary featuring Miwoo |
| October 3 | "Love Again" (또 다시 사랑) | Im Chang-jung |
| October 10 | "I" | Taeyeon featuring Verbal Jint |
| October 17 | "No Make Up" | Zion.T |
| October 24 | "Twenty-three" (스물셋) | IU |
| October 31 | "Twenty-three" (스물셋) | IU |
| November 7 | "Boys and Girls" | Zico featuring Babylon |
| November 14 | "Let's Hug" (안아보자) | 4Men |
| November 21 | "Apology" (지못미) | iKON |
| November 28 | "A Little Girl" (소녀) | Oh Hyuk |
| December 5 | "Daddy" | Psy featuring CL |
| December 12 | "Eureka" | Zico featuring Zion.T |
| December 19 | "This Is Love" (사랑이 맞을거야) | Yoon Mi-rae |
| December 26 | "Again" (다시) | Turbo |

## Monthly charts

| Month | Song | Artist |
| January | "Fire" (화) | Mad Clown featuring Jinsil of Mad Soul Child |
| February | "You from the Same Time" (같은 시간 속의 너) | Naul of Brown Eyed Soul |
| March | "Love Mash" (사랑 범벅) | MC Mong featuring Chancellor of The Channel |
| April | "Only You" (다른 남자 말고 너) | Miss A |
| May | "Loser" | BigBang |
| June | "Bang Bang Bang" (뱅뱅뱅) † | BigBang |
| July | "If You" | BigBang |
| August | "Let's Not Fall In Love" (우리 사랑하지 말아요) | BigBang |
| September | "Leon" (레옹) | Park Myeong-soo and IU |
| October | "I" | Taeyeon featuring Verbal Jint |
| November | "Boys and Girls" | Zico featuring Babylon |
| December | "Daddy" | Psy featuring CL |