Singles at the number-one position on Billboard's Hot Adult Top 40 Tracks chart in 2008:
| Issue Date | Song | Artist |
|---|---|---|
| January 5 | "Bubbly" | Colbie Caillat |
| January 12 | ||
| January 19 | ||
| January 26 | ||
| February 2 | "Apologize" | Timbaland feat. OneRepublic |
| February 9 | ||
| February 16 | ||
| February 23 | ||
| March 1 | ||
| March 8 | ||
| March 15 | "Love Song" | "Sara Bareilles" |
| March 22 | ||
| March 29 | ||
| April 4 | ||
| April 12 | ||
| April 19 | ||
| April 26 | ||
| May 3 | ||
| May 10 | ||
| May 17 | "Feels Like Tonight" | "Daughtry" |
| May 24 | ||
| May 31 | ||
| June 7 | "Bleeding Love" | "Leona Lewis" |
| June 14 | ||
| June 21 | ||
| June 28 | ||
| July 5 | ||
| July 12 | ||
| July 19 | ||
| July 26 | ||
| August 2 | ||
| August 9 | ||
| August 16 | "It's Not My Time" | "3 Doors Down" |
| August 23 | "Viva La Vida" | "Coldplay" |
| August 30 | "It's Not My Time" | "3 Doors Down" |
| September 6 | ||
| September 13 | "Viva La Vida" | "Coldplay" |
| September 19 | ||
| September 26 | ||
| October 3 | ||
| October 10 | ||
| October 18 | "I'm Yours" | "Jason Mraz" |
| October 25 | ||
| November 2 | ||
| November 9 | ||
| November 16 | ||
| November 23 | ||
| November 30 | ||
| December 6 | ||
| December 13 | ||
| December 20 | "Sober" | "Pink" |
| December 27 | "Hot n Cold" | "Katy Perry" |
|
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