List of number-one singles of 2017 (Australia)
The ARIA Singles Chart ranks the best-performing singles in Australia. Its data, published by the Australian Recording Industry Association, is based collectively on the weekly physical and digital sales and streams of singles. In 2017, eleven singles claimed the top spot, including Clean Bandit's "Rockabye", which started its peak position in 2016, and Ed Sheeran's "Shape of You", which spent 15 non-consecutive weeks at number one. Twelve acts, Harry Styles, DJ Khaled, Quavo, Chance the Rapper, Lil Wayne, Luis Fonsi, Daddy Yankee, Sam Smith, Post Malone, 21 Savage, Camila Cabello and Young Thug, reached the top spot for the first time. Pink achieved her ninth number one with "What About Us", and Taylor Swift achieved her fifth number one with "Look What You Made Me Do".
Chart history
| Date | Song | Artist | Ref. |
| 2 January | "Rockabye" | Clean Bandit featuring Sean Paul and Anne-Marie | |
| 9 January | "Rockabye" | Clean Bandit featuring Sean Paul and Anne-Marie | |
| 16 January | "Shape of You" | Ed Sheeran | |
| 23 January | "Shape of You" | Ed Sheeran | |
| 30 January | "Shape of You" | Ed Sheeran | |
| 6 February | "Shape of You" | Ed Sheeran | |
| 13 February | "Shape of You" | Ed Sheeran | |
| 20 February | "Shape of You" | Ed Sheeran | |
| 27 February | "Shape of You" | Ed Sheeran | |
| 6 March | "Shape of You" | Ed Sheeran | |
| 13 March | "Shape of You" | Ed Sheeran | |
| 20 March | "Shape of You" | Ed Sheeran | |
| 27 March | "Shape of You" | Ed Sheeran | |
| 3 April | "Shape of You" | Ed Sheeran | |
| 10 April | "Shape of You" | Ed Sheeran | |
| 17 April | "Sign of the Times" | Harry Styles | |
| 24 April | "Shape of You" | Ed Sheeran | |
| 1 May | "Shape of You" | Ed Sheeran | |
| 8 May | "I'm the One" | DJ Khaled featuring Justin Bieber, Quavo, Chance the Rapper and Lil Wayne | |
| 15 May | "I'm the One" | DJ Khaled featuring Justin Bieber, Quavo, Chance the Rapper and Lil Wayne | |
| 22 May | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber | |
| 29 May | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber | |
| 5 June | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber | |
| 12 June | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber | |
| 19 June | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber | |
| 26 June | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber | |
| 3 July | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber | |
| 10 July | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber | |
| 17 July | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber | |
| 24 July | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber | |
| 31 July | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber | |
| 7 August | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber | |
| 14 August | "Despacito" | Luis Fonsi and Daddy Yankee featuring Justin Bieber | |
| 21 August | "What About Us" | Pink | |
| 28 August | "What About Us" | Pink | |
| 4 September | "Look What You Made Me Do" | Taylor Swift | |
| 11 September | "Look What You Made Me Do" | Taylor Swift | |
| 18 September | "Too Good at Goodbyes" | Sam Smith | |
| 25 September | "Too Good at Goodbyes" | Sam Smith | |
| 2 October | "Rockstar" | Post Malone featuring 21 Savage | |
| 9 October | "Rockstar" | Post Malone featuring 21 Savage | |
| 16 October | "Rockstar" | Post Malone featuring 21 Savage | |
| 23 October | "Rockstar" | Post Malone featuring 21 Savage | |
| 30 October | "Rockstar" | Post Malone featuring 21 Savage | |
| 6 November | "Rockstar" | Post Malone featuring 21 Savage | |
| 13 November | "Rockstar" | Post Malone featuring 21 Savage | |
| 20 November | "Havana" | Camila Cabello featuring Young Thug | |
| 27 November | "Havana" | Camila Cabello featuring Young Thug | |
| 4 December | "Havana" | Camila Cabello featuring Young Thug | |
| 11 December | "Perfect" | Ed Sheeran | |
| 18 December | "Perfect" | Ed Sheeran | |
| 25 December | "Perfect" | Ed Sheeran |