# 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 | No Top 40 released | No Top 40 released | 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 | Power Up | AC/DC |
| 22 January | "Drivers License" | Olivia Rodrigo | Splitter aus Glück | Daniela Alfinito |
| 29 January | "Drivers License" | Olivia Rodrigo | Neujahrskonzert 2021 - New Year's Concert | Wiener Philharmoniker/Riccardo Muti |
| 5 February | "Drivers License" | Olivia Rodrigo | Kvitravn | Wardruna |
| 12 February | "Ohne dich" | Kasimir1441 featuring Badmómzjay and Wildbwoys | Eure Mami | Katja Krasavice |
| 19 February | "Ohne dich" | Kasimir1441 featuring Badmómzjay and Wildbwoys | Medicine at Midnight | Foo Fighters |
| 26 February | "Ohne dich" | Kasimir1441 featuring Badmómzjay and Wildbwoys | 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 | "Wellerman" | Nathan Evans, 220 Kid, Billen Ted | When You See Yourself | Kings of Leon |
| 26 March | "Wellerman" | Nathan Evans, 220 Kid, Billen Ted | Rot | Ina Regen |
| 2 April | "Wellerman" | Nathan Evans, 220 Kid, Billen Ted | Hello! | Maite Kelly |
| 9 April | "Wellerman" | Nathan Evans, 220 Kid, Billen Ted | Rot | Ina Regen |
| 16 April | "Wellerman" | Nathan Evans, 220 Kid, Billen Ted | 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 | "Wellerman" | Nathan Evans, 220 Kid, Billen Ted | Rohdiamant | Samra |
| 14 May | "Wellerman" | Nathan Evans, 220 Kid, Billen Ted | Stay High | Ufo361 |
| 21 May | "Wellerman" | Nathan Evans, 220 Kid, Billen Ted | Vielleicht irgendwann | Wincent Weiss |
| 28 May | "Wellerman" | Nathan Evans, 220 Kid, Billen Ted | Sampler 5 | 187 Strassenbande |
| 4 June | "Good 4 U" | Olivia Rodrigo | Aus dem Licht in den Schatten zurück | Kontra K |
| 11 June | "Good 4 U" | Olivia Rodrigo | Rap über Hass | K.I.Z |
| 18 June | "Good 4 U" | Olivia Rodrigo | Sour | Olivia Rodrigo |
| 25 June | "Good 4 U" | Olivia Rodrigo | Spring bevor du fällst | Buntspecht |
| 2 July | "Beggin'" | Måneskin | Bahama Sunshine | Calimeros |
| 9 July | "Beggin'" | Måneskin | HeimatLiebe | Kastelruther Spatzen |
| 16 July | "Beggin'" | Måneskin | Seelenrausch | Nik P. |
| 23 July | "Beggin'" | Måneskin | Freiheit | Die Amigos |
| 30 July | "Zukunft" | RAF Camora | Zukunft | RAF Camora |
| 6 August | "Blaues Licht" | RAF Camora and Bonez MC | Zukunft | RAF Camora |
| 13 August | "Blaues Licht" | RAF Camora and Bonez MC | Happier Than Ever | Billie Eilish |
| 20 August | "Bad Habits" | Ed Sheeran | Happier Than Ever | Billie Eilish |
| 27 August | "Stay" | The Kid Laroi and Justin Bieber | Happier Than Ever | Billie Eilish |
| 3 September | "Stay" | The Kid Laroi and Justin Bieber | Sour | Olivia Rodrigo |
| 10 September | "Stay" | The Kid Laroi and Justin Bieber | Donda | Kanye West |
| 17 September | "Stay" | The Kid Laroi and Justin Bieber | 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 | "Stay" | The Kid Laroi and Justin Bieber | Dunkel | Die Ärzte |
| 15 October | "Stay" | The Kid Laroi and Justin Bieber | 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 | "Easy on Me" | Adele | Rausch | Helene Fischer |
| 12 November | "Shivers" | Ed Sheeran | = | Ed Sheeran |
| 19 November | "Shivers" | Ed Sheeran | Voyage | ABBA |
| 26 November | "Shivers" | Ed Sheeran | Voyage | ABBA |
| 3 December | "Easy on Me" | Adele | 30 | Adele |
| 10 December | "All I Want for Christmas Is You" | Mariah Carey | 30 | Adele |
| 17 December | "All I Want for Christmas Is You" | Mariah Carey | Servant of the Mind | Volbeat |
| 24 December | "All I Want for Christmas Is You" | Mariah Carey | Voyage | ABBA |
| 31 December | No Top 40 released | No Top 40 released | No Top 40 released | No Top 40 released |