ARC Weekly Top 40 number-one hits of 2003 (U.S.)
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These are the ARC Weekly Top 40 number 1 hits of 2003.
| Issue date | Song | Artist |
| January 4 | Beautiful | Christina Aguilera |
| January 11 | Beautiful | Christina Aguilera |
| January 18 | Beautiful | Christina Aguilera |
| January 25 | Beautiful | Christina Aguilera |
| February 1 | I'm with You | Avril Lavigne |
| February 8 | I'm with You | Avril Lavigne |
| February 15 | I'm with You | Avril Lavigne |
| February 22 | All I Have | Jennifer Lopez featuring LL Cool J |
| March 1 | All I Have | Jennifer Lopez featuring LL Cool J |
| March 8 | All I Have | Jennifer Lopez featuring LL Cool J |
| March 15 | All I Have | Jennifer Lopez featuring LL Cool J |
| March 22 | Picture | Sheryl Crow featuring Kid Rock |
| March 29 | In da Club | 50 Cent |
| April 5 | In da Club | 50 Cent |
| April 12 | In da Club | 50 Cent |
| April 19 | In da Club | 50 Cent |
| April 26 | When I'm Gone | 3 Doors Down |
| May 3 | Rock Your Body | Justin Timberlake |
| May 10 | Rock Your Body | Justin Timberlake |
| May 17 | Rock Your Body | Justin Timberlake |
| May 24 | Rock Your Body | Justin Timberlake |
| May 31 | Bring Me to Life | Evanescence |
| June 7 | Bring Me to Life | Evanescence |
| June 14 | Miss Independent | Kelly Clarkson |
| June 21 | Miss Independent | Kelly Clarkson |
| June 28 | Miss Independent | Kelly Clarkson |
| July 5 | Miss Independent | Kelly Clarkson |
| July 12 | Miss Independent | Kelly Clarkson |
| July 19 | Crazy in Love | Beyoncé featuring Jay-Z |
| July 26 | Crazy in Love | Beyoncé featuring Jay-Z |
| August 2 | Crazy in Love | Beyoncé featuring Jay-Z |
| August 9 | Crazy in Love | Beyoncé featuring Jay-Z |
| August 16 | Where Is the Love? | Black Eyed Peas featuring Justin Timberlake |
| August 23 | Where Is the Love? | Black Eyed Peas featuring Justin Timberlake |
| August 30 | Crazy in Love | Beyoncé featuring Jay-Z |
| September 6 | Crazy in Love | Beyoncé featuring Jay-Z |
| September 13 | Crazy in Love | Beyoncé featuring Jay-Z |
| September 20 | Shake Ya Tailfeather | Nelly / P. Diddy / Murphy Lee |
| September 27 | Shake Ya Tailfeather | Nelly / P. Diddy / Murphy Lee |
| October 4 | Can't Hold Us Down | Christina Aguilera featuring Lil' Kim |
| October 11 | Here Without You | 3 Doors Down |
| October 18 | Here Without You | 3 Doors Down |
| October 25 | Baby Boy | Beyoncé featuring Sean Paul |
| November 1 | Baby Boy | Beyoncé featuring Sean Paul |
| November 8 | Baby Boy | Beyoncé featuring Sean Paul |
| November 15 | Baby Boy | Beyoncé featuring Sean Paul |
| November 22 | Baby Boy | Beyoncé featuring Sean Paul |
| November 29 | Hey Ya! | OutKast |
| December 6 | Hey Ya! | OutKast |
| December 13 | Hey Ya! | OutKast |
| December 20 | Hey Ya! | OutKast |
| December 27 | Hey Ya! | OutKast |
