List of number-one singles of 2015 (Ireland)

The Irish Singles Chart ranks the best-performing singles in Ireland, as compiled by Chart-Track on behalf of the Irish Recorded Music Association.

Ellie Goulding spent six consecutive weeks at number one with her first number one Love Me like You Do.

Justin Bieber gained three number ones in 2015 with What Do You Mean?, Sorry and Love Yourself.

identifies Irish musical acts.

Issue date	Song	Artist(s)	Reference
1 January	"Uptown Funk"	Mark Ronson featuring Bruno Mars	[1]
8 January			[2]
15 January			[3]
22 January			[4]
29 January			[5]
5 February	"Love Me Like You Do"	Ellie Goulding	[6]
12 February			[7]
19 February			[8]
26 February			[9]
5 March			[10]
12 March			[11]
19 March	"FourFiveSeconds"	Rihanna, Kanye West and Paul McCartney	[12]
26 March	"Hold Back the River"	James Bay	[13]
2 April	"Cry for Help"	Hometown	[14]
9 April	"Cheerleader"	OMI	[15]
16 April	"See You Again"	Wiz Khalifa featuring Charlie Puth	[16]
23 April			[17]
30 April			[18]
7 May			[19]
14 May	"Cheerleader"	OMI	[20]
21 May			[21]
28 May			[22]
4 June			[23]
11 June	"Lean On"	Major Lazer and DJ Snake featuring MØ	[24]
18 June			[25]
25 June			[26]
2 July			[27]
9 July	"Are You with Me"	Lost Frequencies	[28]
16 July			[29]
23 July			[30]
30 July			[31]
6 August	"Drag Me Down"	One Direction	[32]
13 August	"Marvin Gaye"	Charlie Puth featuring Meghan Trainor	[33]
20 August	"Can't Feel My Face"	The Weeknd	[34]
27 August			[35]
3 September	"What Do You Mean?"	Justin Bieber	[36]
10 September			[37]
17 September			[38]
24 September			[39]
1 October			[40]
8 October			[41]
15 October			[42]
22 October	"Perfect"	One Direction	[43]
29 October	"Hello"	Adele	[44]
5 November			[45]
12 November			[46]
19 November			[47]
26 November	"Sorry"	Justin Bieber	[48]
3 December			[49]
10 December	"Love Yourself"		[50]
17 December			[51]
24 December			[52]
31 December			[53]