# List of number-one singles of 2018 (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 2018, 13 singles have claimed the top spot, including Ed Sheeran's "Perfect", which started its peak position in 2017. Six acts, Ariana Grande, Ty Dolla Sign, Childish Gambino, Dean Lewis, George Ezra and Bradley Cooper, reached the top spot for the first time.

## Chart history

Key :
| † | Indicates the #1 song on ARIA's End of Year Singles Chart of 2018. |
| Issue date | Song | Artist(s) |
| 1 January | "Perfect" | Ed Sheeran |
| 8 January | "Perfect" | Ed Sheeran |
| 15 January | "Perfect" | Ed Sheeran |
| 22 January | "Perfect" | Ed Sheeran |
| 29 January | "Perfect" | Ed Sheeran |
| 5 February | "God's Plan" | Drake |
| 12 February | "God's Plan" | Drake |
| 19 February | "God's Plan" | Drake |
| 26 February | "God's Plan" | Drake |
| 5 March | "God's Plan" | Drake |
| 12 March | "God's Plan" | Drake |
| 19 March | "God's Plan" | Drake |
| 26 March | "God's Plan" | Drake |
| 2 April | "God's Plan" | Drake |
| 9 April | "God's Plan" | Drake |
| 16 April | "God's Plan" | Drake |
| 23 April | "Nice for What" | Drake |
| 30 April | "No Tears Left to Cry" | Ariana Grande |
| 7 May | "Psycho" | Post Malone featuring Ty Dolla Sign |
| 14 May | "Nice for What" | Drake |
| 21 May | "This Is America" | Childish Gambino |
| 28 May | "Youngblood" † | 5 Seconds of Summer |
| 4 June | "Youngblood" † | 5 Seconds of Summer |
| 11 June | "Youngblood" † | 5 Seconds of Summer |
| 18 June | "Youngblood" † | 5 Seconds of Summer |
| 25 June | "Youngblood" † | 5 Seconds of Summer |
| 2 July | "Youngblood" † | 5 Seconds of Summer |
| 9 July | "Youngblood" † | 5 Seconds of Summer |
| 16 July | "Youngblood" † | 5 Seconds of Summer |
| 23 July | "In My Feelings" | Drake |
| 30 July | "In My Feelings" | Drake |
| 6 August | "In My Feelings" | Drake |
| 13 August | "In My Feelings" | Drake |
| 20 August | "Be Alright" | Dean Lewis |
| 27 August | "Be Alright" | Dean Lewis |
| 3 September | "Be Alright" | Dean Lewis |
| 10 September | "Be Alright" | Dean Lewis |
| 17 September | "Be Alright" | Dean Lewis |
| 24 September | "Shotgun" | George Ezra |
| 1 October | "Shotgun" | George Ezra |
| 8 October | "Shotgun" | George Ezra |
| 15 October | "Shotgun" | George Ezra |
| 22 October | "Shotgun" | George Ezra |
| 29 October | "Shallow" | Lady Gaga and Bradley Cooper |
| 5 November | "Shallow" | Lady Gaga and Bradley Cooper |
| 12 November | "Shallow" | Lady Gaga and Bradley Cooper |
| 19 November | "Thank U, Next" | Ariana Grande |
| 26 November | "Thank U, Next" | Ariana Grande |
| 3 December | "Thank U, Next" | Ariana Grande |
| 10 December | "Thank U, Next" | Ariana Grande |
| 17 December | "Thank U, Next" | Ariana Grande |
| 24 December | "Thank U, Next" | Ariana Grande |
| 31 December | "All I Want for Christmas Is You" | Mariah Carey |

## Number-one artists

| Position | Artist | Weeks at No. 1 |
| 1 | Drake | 17 |
| 2 | 5 Seconds of Summer | 8 |
| 3 | Ariana Grande | 7 |
| 4 | Ed Sheeran | 5 |
| 4 | Dean Lewis | 5 |
| 4 | George Ezra | 5 |
| 5 | Lady Gaga | 3 |
| 5 | Bradley Cooper | 3 |
| 6 | Post Malone | 1 |
| 6 | Ty Dolla Sign (as featuring) | 1 |
| 6 | Childish Gambino | 1 |
| 6 | Mariah Carey | 1 |