List of number-one hits of 2021 (Austria)
This is a list of the Austrian number-one singles and albums of 2021 as compiled by Ö3 Austria Top 40, the official chart provider of Austria.
| Issue date | Song | Artist | Album | Artist |
|---|---|---|---|---|
| 1 January | No Top 40 released | |||
| 8 January | "All I Want for Christmas Is You" | Mariah Carey | Power Up | AC/DC |
| 15 January | "7" | Ufo361 and Bonez MC | ||
| 22 January | "Drivers License" | Olivia Rodrigo | Splitter aus Glück | Daniela Alfinito |
| 29 January | Neujahrskonzert 2021 - New Year's Concert | Wiener Philharmoniker/Riccardo Muti | ||
| 5 February | Kvitravn | Wardruna | ||
| 12 February | "Ohne dich" | Kasimir1441 featuring Badmómzjay and Wildbwoys | Eure Mami | Katja Krasavice |
| 19 February | Medicine at Midnight | Foo Fighters | ||
| 26 February | Peter - Unvergesslich - Seine grössten Hits & Schlager | Peter Alexander | ||
| 5 March | "Madonna" | Bausa and Apache 207 | Aghori | Kool Savas |
| 12 March | "Wellerman" | Nathan Evans, 220 Kid, Billen Ted | Peter - Unvergesslich - Seine grössten Hits & Schlager | Peter Alexander |
| 19 March | When You See Yourself | Kings of Leon | ||
| 26 March | Rot | Ina Regen | ||
| 2 April | Hello! | Maite Kelly | ||
| 9 April | Rot | Ina Regen | ||
| 16 April | Justice | Justin Bieber | ||
| 23 April | "Montero (Call Me by Your Name)" | Lil Nas X | Ciao! | Giovanni Zarrella |
| 30 April | "Wellerman" | Nathan Evans, 220 Kid, Billen Ted | Let the Bad Times Roll | The Offspring |
| 7 May | Rohdiamant | Samra | ||
| 14 May | Stay High | Ufo361 | ||
| 21 May | Vielleicht irgendwann | Wincent Weiss | ||
| 28 May | Sampler 5 | 187 Strassenbande | ||
| 4 June | "Good 4 U" | Olivia Rodrigo | Aus dem Licht in den Schatten zurück | Kontra K |
| 11 June | Rap über Hass | K.I.Z | ||
| 18 June | Sour | Olivia Rodrigo | ||
| 25 June | Spring bevor du fällst | Buntspecht | ||
| 2 July | "Beggin'" | Måneskin | Bahama Sunshine | Calimeros |
| 9 July | HeimatLiebe | Kastelruther Spatzen | ||
| 16 July | Seelenrausch | Nik P. | ||
| 23 July | Freiheit | Die Amigos | ||
| 30 July | "Zukunft" | RAF Camora | Zukunft | RAF Camora |
| 6 August | "Blaues Licht" | RAF Camora and Bonez MC | ||
| 13 August | Happier Than Ever | Billie Eilish | ||
| 20 August | "Bad Habits" | Ed Sheeran | ||
| 27 August | "Stay" | The Kid Laroi and Justin Bieber | ||
| 3 September | Sour | Olivia Rodrigo | ||
| 10 September | Donda | Kanye West | ||
| 17 September | Senjutsu | Iron Maiden | ||
| 24 September | "2CB" | RAF Camora featuring Luciano | Metallica | Metallica |
| 1 October | "Stay" | The Kid Laroi and Justin Bieber | The Bootleg Series Vol. 16: Springtime in New York 1980–1985 | Bob Dylan |
| 8 October | Dunkel | Die Ärzte | ||
| 15 October | Zukunft | RAF Camora | ||
| 22 October | "Guapa" | RAF Camora | Echt Schlager − Die große Fete − Volume II | Die Grubertaler |
| 29 October | "Easy on Me" | Adele | Rausch | Helene Fischer |
| 5 November | ||||
| 12 November | "Shivers" | Ed Sheeran | = | Ed Sheeran |
| 19 November | Voyage | ABBA | ||
| 26 November | ||||
| 3 December | "Easy on Me" | Adele | 30 | Adele |
| 10 December | "All I Want for Christmas Is You" | Mariah Carey | ||
| 17 December | Servant of the Mind | Volbeat | ||
| 24 December | Voyage | ABBA | ||
| 31 December | No Top 40 released | |||