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.^[1]

Big Bang claimed the year's best-performing single with "Bang Bang Bang"; their three other singles also topped the monthly charts for three months.

Weekly charts

Zion.T topped the weekly chart with five songs – both as lead and featured artist.

IU scored three weekly number-one songs.

iKon earned two number-one singles, including their debut single "My Type".

Taeyeon charted at number one with her debut single "I"; her concurrent group Girls' Generation's single "Party" also made it to the top spot.

Key

†	Indicates best-performing single of 2015[2]

Source: Gaon Digital Chart^[1]

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
February 28
March 7	"Love Mash" (사랑범벅)	MC Mong featuring Chancellor of The Channels
March 14
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
April 18	"Who's Your Mama?" (어머님이 누구니)	Park Jin-young featuring Jessi
April 25
May 2	"Loser"	Big Bang
May 9
May 16
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
August 22	"Oppa's Car" (오빠차)	Incredivle, Tablo, Jinusean
August 29	"Leon" (레옹)	Park Myeong-soo, IU
September 5
September 12
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
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

Psy earned a monthly number one with "Daddy".

Month	Song	Artist	Ref.
January	"Fire" (화)	Mad Clown featuring Jinsil of Mad Soul Child	[3]
February	"You from the Same Time" (같은 시간 속의 너)	Naul of Brown Eyed Soul	[4]
March	"Love Mash" (사랑 범벅)	MC Mong featuring Chancellor of The Channel	[5]
April	"Only You" (다른 남자 말고 너)	Miss A	[6]
May	"Loser"	BigBang	[7]
June	"Bang Bang Bang" (뱅뱅뱅) †		[8]
July	"If You"		[9]
August	"Let's Not Fall In Love" (우리 사랑하지 말아요)		[10]
September	"Leon" (레옹)	Park Myeong-soo and IU	[11]
October	"I"	Taeyeon featuring Verbal Jint	[12]
November	"Boys and Girls"	Zico featuring Babylon	[13]
December	"Daddy"	Psy featuring CL	[14]