# List of UK R&B Singles Chart number ones of 2008

The UK R&B Chart is a weekly chart that ranks the 40 biggest-selling singles and albums that are classified in the R&B genre in the United Kingdom. The chart is compiled by the Official Charts Company, and is based on both physical and digital sales. This is a list of The Official UK Charts Company R&B hits of 2008.

## Number ones

Key :
| † | Best-selling R&B single of the year |
| Issue date | Single | Artist |
| 6 January | "Crank That (Soulja Boy)" | Soulja Boy |
| 13 January | "Crank That (Soulja Boy)" | Soulja Boy |
| 20 January | "Superstar" | Lupe Fiasco featuring Matthew Santos |
| 27 January | "Ride It" | Jay Sean |
| 3 February | "Work" | Kelly Rowland |
| 10 February | "Don't Stop the Music" | Rihanna |
| 17 February | "Don't Stop the Music" | Rihanna |
| 24 February | "Don't Stop the Music" | Rihanna |
| 2 March | "Work" | Kelly Rowland |
| 9 March | "Come On Girl" | Taio Cruz featuring Luciana |
| 16 March | "Scream" | Timbaland featuring Keri Hilson and Nicole Scherzinger |
| 23 March | "Scream" | Timbaland featuring Keri Hilson and Nicole Scherzinger |
| 30 March | "American Boy" † | Estelle featuring Kanye West |
| 6 April | "Touch My Body" | Mariah Carey |
| 13 April | "American Boy" † | Estelle featuring Kanye West |
| 20 April | "American Boy" † | Estelle featuring Kanye West |
| 27 April | "4 Minutes" | Madonna featuring Justin Timberlake |
| 4 May | "4 Minutes" | Madonna featuring Justin Timberlake |
| 11 May | "4 Minutes" | Madonna featuring Justin Timberlake |
| 18 May | "4 Minutes" | Madonna featuring Justin Timberlake |
| 25 May | "Take a Bow" | Rihanna |
| 1 June | "Take a Bow" | Rihanna |
| 8 June | "4 Minutes" | Madonna featuring Justin Timberlake |
| 15 June | "Take a Bow" | Rihanna |
| 22 June | "Forever" | Chris Brown |
| 29 June | "Closer" | Ne-Yo |
| 6 July | "Closer" | Ne-Yo |
| 13 July | "No Air" | Jordin Sparks featuring Chris Brown |
| 20 July | "No Air" | Jordin Sparks featuring Chris Brown |
| 27 July | "No Air" | Jordin Sparks featuring Chris Brown |
| 3 August | "Stay With Me" | Ironik |
| 10 August | "Stay With Me" | Ironik |
| 17 August | "Stay With Me" | Ironik |
| 24 August | "No Air" | Jordin Sparks Featuring Chris Brown |
| 31 August | "Beggin" | Madcon |
| 7 September | "Summertime" | New Kids on the Block |
| 14 September | "When I Grow Up" | The Pussycat Dolls |
| 21 September | "When I Grow Up" | The Pussycat Dolls |
| 28 September | "When I Grow Up" | The Pussycat Dolls |
| 5 October | "When I Grow Up" | The Pussycat Dolls |
| 12 October | "When I Grow Up" | The Pussycat Dolls |
| 19 October | "Paper Planes" | MIA |
| 26 October | "My Life" | The Game featuring Lil Wayne |
| 2 November | "My Life" | The Game featuring Lil Wayne |
| 9 November | "Love Lockdown" | Kanye West |
| 16 November | "If I Were a Boy" | Beyoncé |
| 23 November | "If I Were a Boy" | Beyoncé |
| 30 November | "Live Your Life" | T.I. featuring Rihanna |
| 7 December | "Live Your Life" | T.I. featuring Rihanna |
| 14 December | "Live Your Life" | T.I. featuring Rihanna |
| 21 December | "If I Were a Boy" | Beyoncé |
| 28 December | "Live Your Life" | T.I. featuring Rihanna |