# List of number-one singles of 2020 (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 2020, eleven songs reached number one, with "Dance Monkey" by Tones and I returning to the top on the first chart of the year after spending 21 weeks atop the chart in 2019. Nine artists, The Weeknd, Saint Jhn, DaBaby, Roddy Ricch, Jawsh 685, Cardi B, Megan Thee Stallion, 24kGoldn and Iann Dior, reached the top for the first time.

## Chart history

Key :
| † | Indicates best-performing single of 2020 |
| Issue date | Song | Artist(s) |
| 6 January | "Dance Monkey" | Tones and I |
| 13 January | "Dance Monkey" | Tones and I |
| 20 January | "Dance Monkey" | Tones and I |
| 27 January | "Blinding Lights" † | The Weeknd |
| 3 February | "Blinding Lights" † | The Weeknd |
| 10 February | "Blinding Lights" † | The Weeknd |
| 17 February | "Blinding Lights" † | The Weeknd |
| 24 February | "Blinding Lights" † | The Weeknd |
| 2 March | "Blinding Lights" † | The Weeknd |
| 9 March | "Blinding Lights" † | The Weeknd |
| 16 March | "Blinding Lights" † | The Weeknd |
| 23 March | "Blinding Lights" † | The Weeknd |
| 30 March | "Blinding Lights" † | The Weeknd |
| 6 April | "Roses" | Saint Jhn |
| 13 April | "Roses" | Saint Jhn |
| 20 April | "Blinding Lights" † | The Weeknd |
| 27 April | "Roses" | Saint Jhn |
| 4 May | "Roses" | Saint Jhn |
| 11 May | "Roses" | Saint Jhn |
| 18 May | "Roses" | Saint Jhn |
| 25 May | "Rockstar" | DaBaby featuring Roddy Ricch |
| 1 June | "Rockstar" | DaBaby featuring Roddy Ricch |
| 8 June | "Rockstar" | DaBaby featuring Roddy Ricch |
| 15 June | "Rockstar" | DaBaby featuring Roddy Ricch |
| 22 June | "Rockstar" | DaBaby featuring Roddy Ricch |
| 29 June | "Rockstar" | DaBaby featuring Roddy Ricch |
| 6 July | "Savage Love (Laxed – Siren Beat)" | Jawsh 685 and Jason Derulo |
| 13 July | "Savage Love (Laxed – Siren Beat)" | Jawsh 685 and Jason Derulo |
| 20 July | "Savage Love (Laxed – Siren Beat)" | Jawsh 685 and Jason Derulo |
| 27 July | "Savage Love (Laxed – Siren Beat)" | Jawsh 685 and Jason Derulo |
| 3 August | "Cardigan" | Taylor Swift |
| 10 August | "Savage Love (Laxed – Siren Beat)" | Jawsh 685 and Jason Derulo |
| 17 August | "Savage Love (Laxed – Siren Beat)" | Jawsh 685 and Jason Derulo |
| 24 August | "WAP" | Cardi B featuring Megan Thee Stallion |
| 31 August | "WAP" | Cardi B featuring Megan Thee Stallion |
| 7 September | "WAP" | Cardi B featuring Megan Thee Stallion |
| 14 September | "WAP" | Cardi B featuring Megan Thee Stallion |
| 21 September | "WAP" | Cardi B featuring Megan Thee Stallion |
| 28 September | "WAP" | Cardi B featuring Megan Thee Stallion |
| 5 October | "Mood" | 24kGoldn featuring Iann Dior |
| 12 October | "Mood" | 24kGoldn featuring Iann Dior |
| 19 October | "Mood" | 24kGoldn featuring Iann Dior |
| 26 October | "Mood" | 24kGoldn featuring Iann Dior |
| 2 November | "Positions" | Ariana Grande |
| 9 November | "Positions" | Ariana Grande |
| 16 November | "Mood" | 24kGoldn featuring Iann Dior |
| 23 November | "Mood" | 24kGoldn featuring Iann Dior |
| 30 November | "Mood" | 24kGoldn featuring Iann Dior |
| 7 December | "Mood" | 24kGoldn featuring Iann Dior |
| 14 December | "Mood" | 24kGoldn featuring Iann Dior |
| 21 December | "Willow" | Taylor Swift |
| 28 December | "All I Want for Christmas Is You" | Mariah Carey |

## Number-one artists

List of number-one artists, with total weeks spent at No. 1 shown :
| Position | Artist | Weeks at No. 1 |
| 1 | The Weeknd | 11 |
| 2 | 24kGoldn | 9 |
| 2 | Iann Dior | 9 |
| 3 | Saint Jhn | 6 |
| 3 | DaBaby | 6 |
| 3 | Roddy Ricch | 6 |
| 3 | Jawsh 685 | 6 |
| 3 | Jason Derulo | 6 |
| 3 | Cardi B | 6 |
| 3 | Megan Thee Stallion | 6 |
| 4 | Tones and I | 3 |
| 5 | Ariana Grande | 2 |
| 5 | Taylor Swift | 2 |
| 6 | Mariah Carey | 1 |