# List of number-one digital songs of 2006 (U.S.)

The highest-selling digital singles in the United States are ranked in the Hot Digital Songs chart, published by Billboard magazine. The data are compiled by Nielsen SoundScan based on each single's weekly digital sales, which combines sales of different versions of a single for a summarized figure.

## Chart history

Key :
| † | Indicates best-charting digital song of 2006 |
| Issue date | Song | Artist(s) | Weekly sales |
| January 7 | "Laffy Taffy" | D4L | 54,000 |
| January 14 | "Laffy Taffy" | D4L | 175,000 |
| January 21 | "Dirty Little Secret" | The All-American Rejects | |
| January 28 | "Check on It" | Beyoncé featuring Slim Thug | 61,000 |
| February 4 | "Check on It" | Beyoncé featuring Slim Thug | |
| February 11 | "Breaking Free" | Zac Efron and Vanessa Hudgens | 82,000 |
| February 18 | "You're Beautiful" | James Blunt | 104,500 |
| February 25 | "You're Beautiful" | James Blunt | |
| March 4 | "You're Beautiful" | James Blunt | |
| March 11 | "You're Beautiful" | James Blunt | |
| March 18 | "So Sick" | Ne-Yo | 120,000 |
| March 25 | "So Sick" | Ne-Yo | |
| April 1 | "Bad Day" † | Daniel Powter | 106,500 |
| April 8 | "Bad Day" † | Daniel Powter | |
| April 15 | "Bad Day" † | Daniel Powter | |
| April 22 | "Bad Day" † | Daniel Powter | |
| April 29 | "Bad Day" † | Daniel Powter | |
| May 6 | "Bad Day" † | Daniel Powter | |
| May 13 | "SOS" | Rihanna | 169,500 |
| May 20 | "SOS" | Rihanna | |
| May 27 | "SOS" | Rihanna | |
| June 3 | "Bad Day" | Daniel Powter | |
| June 10 | "Promiscuous" | Nelly Furtado featuring Timbaland | 96,500 |
| June 17 | "Hips Don't Lie" | Shakira featuring Wyclef Jean | 266,500 |
| June 24 | "Hips Don't Lie" | Shakira featuring Wyclef Jean | |
| July 1 | "Hips Don't Lie" | Shakira featuring Wyclef Jean | |
| July 8 | "Promiscuous" | Nelly Furtado featuring Timbaland | 140,000 |
| July 15 | "Promiscuous" | Nelly Furtado featuring Timbaland | |
| July 22 | "Promiscuous" | Nelly Furtado featuring Timbaland | 99,000 |
| July 29 | "Crazy" | Gnarls Barkley | 90,000 |
| August 5 | "Crazy" | Gnarls Barkley | |
| August 12 | "Crazy" | Gnarls Barkley | |
| August 19 | "London Bridge" | Fergie | 114,000 |
| August 26 | "London Bridge" | Fergie | |
| September 2 | "London Bridge" | Fergie | |
| September 9 | "SexyBack" | Justin Timberlake | 250,000 |
| September 16 | "SexyBack" | Justin Timberlake | |
| September 23 | "SexyBack" | Justin Timberlake | 159,000 |
| September 30 | "SexyBack" | Justin Timberlake | 172,000 |
| October 7 | "SexyBack" | Justin Timberlake | |
| October 14 | "How to Save a Life" | The Fray | 89,000 |
| October 21 | "Lips of an Angel" | Hinder | |
| October 28 | "Lips of an Angel" | Hinder | 75,000 |
| November 4 | "Smack That" | Akon featuring Eminem | 91,500 |
| November 11 | "My Love" | Justin Timberlake featuring T.I. | |
| November 18 | "My Love" | Justin Timberlake featuring T.I. | |
| November 25 | "Fergalicious" | Fergie featuring will.i.am | |
| December 2 | "I Wanna Love You" | Akon featuring Snoop Dogg | 146,000 |
| December 9 | "I Wanna Love You" | Akon featuring Snoop Dogg | |
| December 16 | "Irreplaceable" | Beyoncé | 96,000 |
| December 23 | "Fergalicious" | Fergie featuring will.i.am | |
| December 30 | "Irreplaceable" | Beyoncé | 88,000 |