This is a list of the number-one hits of 2003 on FIMI's Italian Singles and Albums Charts.
| Issue date | Song | Artist | Album | Artist |
|---|---|---|---|---|
| 3 January | " Feel" | Robbie Williams | Tracks | Vasco Rossi |
| 10 January | ||||
| 17 January | ||||
| 24 January | " Mundian To Bach Ke" | Panjabi MC | Io non mi sento italiano | Giorgio Gaber |
| 31 January | ||||
| 7 February | ||||
| 14 February | " Almeno tu nell'universo" | Elisa | ||
| 21 February | "Dedicato a te" | Le Vibrazioni | ||
| 28 February | "Almeno tu nell'universo" | Elisa | Diamonds on the Inside | Ben Harper |
| 7 March | The Mass | Era | ||
| 14 March | " Gocce di memoria" | Giorgia | Dalla pace del mare lontano | Sergio Cammariere |
| 21 March | Meteora | Linkin Park | ||
| 28 March | ||||
| 4 April | Dalla pace del mare lontano | Sergio Cammariere | ||
| 11 April | " American Life" | Madonna | Home | Simply Red |
| 18 April | "Gocce di memoria" | Giorgia | American Life | Madonna |
| 25 April | ||||
| 2 May | Dalla pace del mare lontano | Sergio Cammariere | ||
| 9 May | " Un'emozione per sempre" | Eros Ramazzotti | The Golden Age of Grotesque | Marilyn Manson |
| 16 May | ||||
| 23 May | Sono io, l'uomo della storia accanto | Claudio Baglioni | ||
| 30 May | 9 | Eros Ramazzotti | ||
| 6 June | ||||
| 13 June | ||||
| 20 June | " Bring Me to Life" | Evanescence featuring Paul McCoy | ||
| 27 June | ||||
| 4 July | " Get Busy" | Sean Paul | ||
| 11 July | ||||
| 18 July | "Bring Me to Life" | Evanescence featuring Paul McCoy | ||
| 25 July | "Get Busy" | Sean Paul | ||
| 1 August | ||||
| 8 August | ||||
| 15 August | ||||
| 22 August | ||||
| 29 August | "Bring Me to Life" | Evanescence featuring Paul McCoy | ||
| 5 September | " You Weren't There" | Lene Marlin | Dance of Death | Iron Maiden |
| 12 September | " White Flag" | Dido | Ladra di vento | Giorgia |
| 19 September | " Never Leave You (Uh Oooh, Uh Oooh)" | Lumidee | Sacred Love | Sting |
| 26 September | " Obsesión" | Aventura | ||
| 3 October | Che fantastica storia è la vita | Antonello Venditti | ||
| 10 October | The Platinum Collection | Nomadi | ||
| 17 October | We Broke the Rules | Aventura | ||
| 24 October |
In Time: The Best of R.E.M. 1988–2003 |
R.E.M. | ||
| 31 October | ||||
| 7 November | Cattura | Renato Zero | ||
| 14 November | ||||
| 21 November | Giro d'Italia | Ligabue | ||
| 28 November | ||||
| 5 December | ||||
| 12 December | ||||
| 19 December | ||||
| 26 December |