List of number-one singles of 2017 (Ireland)

The Irish Singles Chart ranks the best-performing singles in Ireland, as compiled by the Official Charts Company on behalf of the Irish Recorded Music Association.^[1]

Issue date	Song	Artist(s)	Reference
6 January	"Rockabye"	Clean Bandit featuring Sean Paul and Anne-Marie	[2]
13 January	"Shape of You"	Ed Sheeran	[3]
20 January			[4]
27 January			[5]
3 February			[6]
10 February			[7]
17 February			[8]
24 February			[9]
3 March			[10]
10 March	"Galway Girl"		[11]
17 March			[12]
24 March	"Shape of You"		[13]
31 March			[14]
7 April			[15]
14 April			[16]
21 April			[17]
28 April			[18]
5 May	"Despacito"	Luis Fonsi and Daddy Yankee featuring Justin Bieber	[19]
12 May			[20]
19 May			[21]
26 May			[22]
2 June			[23]
9 June			[24]
16 June			[25]
23 June			[26]
30 June			[27]
7 July			[28]
14 July			[29]
21 July			[30]
28 July			[31]
4 August			[32]
11 August			[33]
18 August	"New Rules"	Dua Lipa	[34]
25 August			[35]
1 September	"Look What You Made Me Do"	Taylor Swift	[36]
8 September	"New Rules"	Dua Lipa	[37]
15 September			[38]
22 September			[39]
29 September			[40]
6 October			[41]
13 October			[42]
20 October	"Rockstar"	Post Malone featuring 21 Savage	[43]
27 October			[44]
3 November	"Havana"	Camila Cabello featuring Young Thug	[45]
10 November			[46]
17 November			[47]
24 November			[48]
1 December			[49]
8 December	"Perfect"	Ed Sheeran	[50]
15 December			[51]
22 December			[52]
29 December			[53]