List of Billboard number-one dance singles of 1998
These are the Billboard Hot Dance/Disco Club Play and Maxi-Singles Sales number-one hits of 1998.
| Issue date | Club Play Song | Artist | Maxi-Singles Sales | Artist | |
| January 3 | "Never Gonna Fall" | Lisa Stansfield | "Roxanne '97 - Puff Daddy Remix" | Sting & The Police | |
| January 10 | "Much Better" | Club 69 featuring Suzanne Palmer | "Roxanne '97 - Puff Daddy Remix" | Sting & The Police | |
| January 17 | "Perfect Love" | House of Prince featuring Oezlem | "Together Again" | Janet | |
| January 24 | "Circles" | Kimara Lovelace | "Dangerous" | Busta Rhymes | |
| January 31 | "Kiss You All Over" | No Mercy | "Dangerous" | Busta Rhymes | |
| February 7 | "Together Again" | Janet | "Gone Till November" | Wyclef Jean | |
| February 14 | "Elements" | Danny Tenaglia | "Deja Vu (Uptown Baby)" | Lord Tariq & Peter Gunz | |
| February 21 | "Elements" | Danny Tenaglia | "How Do I Live" | Leann Rimes | |
| February 28 | "You Only Have to Say You Love Me" | Hannah Jones | "Get At Me Dog" | DMX | |
| March 7 | "Off the Hook" | Jody Watley | "Get At Me Dog" | DMX | |
| March 14 | "You Make Me Feel (Mighty Real)" | Byron Stingily | "Get At Me Dog" | DMX | |
| March 21 | "Stay" | Sash! featuring La Trec | "Get At Me Dog" | DMX | |
| March 28 | "Remember" | BT | "Get At Me Dog" | DMX | |
| April 4 | "It's Over Love" | Todd Terry featuring Shannon | "Get At Me Dog" | DMX | |
| April 11 | "I'm Leavin'" | Lisa Stansfield | "Get At Me Dog" | DMX | |
| April 18 | "Fun" | Da Mob featuring Jocelyn Brown | "Get At Me Dog" | DMX | |
| April 25 | "Frozen" | Madonna | "Get At Me Dog" | DMX | |
| May 2 | "Frozen" | Madonna | "Get At Me Dog" | DMX | |
| May 9 | "Found a Cure" | Ultra Naté | "My All" / "Fly Away (Butterfly Reprise)" | Mariah Carey | |
| May 16 | "Found a Cure" | Ultra Naté | "My All" / "Fly Away (Butterfly Reprise)" | Mariah Carey | |
| May 23 | "Found a Cure" | Ultra Naté | "My All" / "Fly Away (Butterfly Reprise)" | Mariah Carey | |
| May 30 | "Shout to the Top" | Fire Island featuring Loleatta Holloway | "I Get Lonely" | Janet | |
| June 6 | "A Rose Is Still a Rose" | Aretha Franklin | "[The Boy Is Mine (Brandy and Monica (singer)|Monica song)|The Boy Is Mine]" | Brandy & Monica | |
| June 13 | "Sunchyme" | Dario G | "The Boy Is Mine" | Brandy & Monica | |
| June 20 | "Ray of Light" | Madonna | "The Boy Is Mine" | Brandy & Monica | |
| June 27 | "Ray of Light" | Madonna | "My All" / "Fly Away " | Mariah Carey | |
| July 4 | "Ray of Light" | Madonna | "My All" / "Fly Away " | Mariah Carey | |
| July 11 | "Ray of Light" | Madonna | "My All" / "Fly Away " | Mariah Carey | |
| July 18 | "Sweet Freedom" | Shawn Christopher | "My All" / "Fly Away " | Mariah Carey | |
| July 25 | "Sweet Freedom" | Shawn Christopher | "My All" / "Fly Away " | Mariah Carey | |
| August 1 | "In My Life" | José Nunez featuring Octahvia | "The Boy Is Mine" | Brandy & Monica | |
| August 8 | "Go Deep" | Janet | "The Boy Is Mine" | Brandy & Monica | |
| August 15 | "Comin' Back" | The Crystal Method | "The Boy Is Mine" | Brandy & Monica | |
| August 22 | "Catch the Light" | Martha Wash | "The Boy Is Mine" | Brandy & Monica | |
| August 29 | "Here We Go Again" | Aretha Franklin | "The Boy Is Mine" | Brandy & Monica | |
| September 5 | "Needin' U" | David Morales presents The Face | "The Boy Is Mine" | Brandy & Monica | |
| September 12 | "Everybody Dance" | Barbara Tucker | "The Boy Is Mine" | Brandy & Monica | |
| September 19 | "Oye!" | Gloria Estefan | "The Boy Is Mine" | Brandy & Monica | |
| September 26 | "God Is a DJ" | Faithless | "The Boy Is Mine" | Brandy & Monica | |
| October 3 | "Music Sounds Better with You" | Stardust | "The Boy Is Mine" | Brandy & Monica | |
| October 10 | "Music Sounds Better with You" | Stardust | "The Boy Is Mine" | Brandy & Monica | |
| October 17 | "Let Me Go... Release Me" | Veronica | "The Boy Is Mine" | Brandy & Monica | |
| October 24 | "Nobody's Supposed to Be Here" | Deborah Cox | "The Boy Is Mine" | Brandy & Monica | |
| October 31 | "Can't Get High Without U" | Joey Negro featuring Taka Boom | "The Boy Is Mine" | Brandy & Monica | |
| November 7 | "The Freaks Come Out" | Cevin Fisher's Big Freak | "The Boy Is Mine" | Brandy & Monica | |
| November 14 | "The Future of the Future " | Deep Dish with Everything but the Girl | "The Boy Is Mine" | Brandy & Monica | |
| November 21 | "Love Him" | Donna Lewis | "The Boy Is Mine" | Brandy & Monica | |
| November 28 | "Changes" | So Pure! featuring Sheleen Thomas | "The Boy Is Mine" | Brandy & Monica | |
| December 5 | "The First Night" | Monica | "Believe" | Cher | |
| December 12 | "Believe" | Cher | "Believe" | Cher | |
| December 19 | "Believe" | Cher | "Believe" | Cher | |
| December 26 | "Believe" | Cher | "Believe" | Cher |