Hot 100 number-one hits of 1968 (United States)
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These are the Billboard magazine Hot 100 number one hits of 1968.
| Issue Date | Song | Artist |
| January 6 | "Hello Goodbye" | The Beatles |
| January 13 | "Hello Goodbye" | The Beatles |
| January 20 | "Judy in Disguise (With Glasses)" | John Fred and His Playboy Band |
| January 27 | "Judy in Disguise (with Glasses)" | John Fred and His Playboy Band |
| February 3 | "Green Tambourine" | The Lemon Pipers |
| February 10 | "Love is Blue" | Paul Mauriat |
| February 17 | "Love is Blue" | Paul Mauriat |
| February 24 | "Love is Blue" | Paul Mauriat |
| March 2 | "Love is Blue" | Paul Mauriat |
| March 9 | "Love is Blue" | Paul Mauriat |
| March 16 | "(Sittin' on) the Dock of the Bay" | Otis Redding |
| March 23 | "(Sittin' on) the Dock of the Bay" | Otis Redding |
| March 30 | "(Sittin' on) the Dock of the Bay" | Otis Redding |
| April 6 | "(Sittin' on) the Dock of the Bay" | Otis Redding |
| April 13 | "Honey" | Bobby Goldsboro |
| April 20 | "Honey" | Bobby Goldsboro |
| April 27 | "Honey" | Bobby Goldsboro |
| May 4 | "Honey" | Bobby Goldsboro |
| May 11 | "Honey" | Bobby Goldsboro |
| May 18 | "Tighten Up" | Archie Bell & the Drells |
| May 25 | "Tighten Up" | Archie Bell & the Drells |
| June 1 | "Mrs. Robinson" | Simon and Garfunkel |
| June 8 | "Mrs. Robinson" | Simon and Garfunkel |
| June 15 | "Mrs. Robinson" | Simon and Garfunkel |
| June 22 | "This Guy's in Love with You" | Herb Alpert |
| June 29 | "This Guy's in Love with You" | Herb Alpert |
| July 6 | "This Guy's in Love with You" | Herb Alpert |
| July 13 | "This Guy's in Love with You" | Herb Alpert |
| July 20 | "Grazing in the Grass" | Hugh Masekela |
| July 27 | "Grazing in the Grass" | Hugh Masekela |
| August 3 | "Hello, I Love You" | The Doors |
| August 10 | "Hello, I Love You" | The Doors |
| August 17 | "People Got to Be Free" | The Rascals |
| August 24 | "People Got to Be Free" | The Rascals |
| August 31 | "People Got to Be Free" | The Rascals |
| September 7 | "People Got to Be Free" | The Rascals |
| September 14 | "People Got to Be Free" | The Rascals |
| September 21 | "Harper Valley PTA" | Jeannie C. Riley |
| September 28 | "Hey Jude" | The Beatles |
| October 5 | "Hey Jude" | The Beatles |
| October 12 | "Hey Jude" | The Beatles |
| October 19 | "Hey Jude" | The Beatles |
| October 26 | "Hey Jude" | The Beatles |
| November 2 | "Hey Jude" | The Beatles |
| November 9 | "Hey Jude" | The Beatles |
| November 16 | "Hey Jude" | The Beatles |
| November 23 | "Hey Jude" | The Beatles |
| November 30 | "Love Child" | Diana Ross & the Supremes |
| December 7 | "Love Child" | Diana Ross & the Supremes |
| December 14 | "I Heard It Through the Grapevine" | Marvin Gaye |
| December 21 | "I Heard It Through the Grapevine" | Marvin Gaye |
| December 28 | "I Heard It Through the Grapevine" | Marvin Gaye |

