Nummer 1-hits in de Ultratop 50 in 1998
Deze hits stonden in 1998 op nummer 1 in de Ultratop 50
| Datum | Artiest | Titel |
| 3 januari | Aqua | Barbie girl |
| 10 januari | Aqua | Barbie girl |
| 17 januari | Natalie Imbruglia | Torn |
| 24 januari | Natalie Imbruglia | Torn |
| 31 januari | Natalie Imbruglia | Torn |
| 7 februari | Natalie Imbruglia | Torn |
| 14 februari | Natalie Imbruglia | Torn |
| 21 februari | Natalie Imbruglia | Torn |
| 28 februari | Natalie Imbruglia | Torn |
| 7 maart | Céline Dion | My heart will go on |
| 14 maart | Céline Dion | My heart will go on |
| 21 maart | DJ Visage | Formula |
| 28 maart | DJ Visage | Formula |
| 4 april | DJ Visage | Formula |
| 11 april | DJ Visage | Formula |
| 18 april | Céline Dion | My heart will go on |
| 25 april | Céline Dion | My heart will go on |
| 2 mei | Céline Dion | My heart will go on |
| 9 mei | Céline Dion | My heart will go on |
| 16 mei | Céline Dion | My heart will go on |
| 23 mei | Steps | Last thing on my mind |
| 30 mei | Steps | Last thing on my mind |
| 6 juni | Steps | Last thing on my mind |
| 13 juni | Steps | Last thing on my mind |
| 20 juni | Steps | Last thing on my mind |
| 27 juni | Steps | Last thing on my mind |
| 4 juli | Steps | Last thing on my mind |
| 11 juli | Steps | Last thing on my mind |
| 18 juli | Steps | Last thing on my mind |
| 25 juli | Steps | Last thing on my mind |
| 1 augustus | Pras Michel & ODB & Mýa | Ghetto supastar (that is what you are) |
| 8 augustus | Pras Michel & ODB & Mýa | Ghetto supastar (that is what you are) |
| 15 augustus | Pras Michel & ODB & Mýa | Ghetto supastar (that is what you are) |
| 22 augustus | Pras Michel & ODB & Mýa | Ghetto supastar (that is what you are) |
| 29 augustus | Pras Michel & ODB & Mýa | Ghetto supastar (that is what you are) |
| 5 september | Steps | One for sorrow |
| 12 september | Vengaboys | We like to party (The Vengabus) |
| 19 september | Vengaboys | We like to party (The Vengabus) |
| 26 september | Vengaboys | We like to party (The Vengabus) |
| 3 oktober | Vengaboys | We like to party (The Vengabus) |
| 10 oktober | Vengaboys | We like to party (The Vengabus) |
| 17 oktober | Vengaboys | We like to party (The Vengabus) |
| 24 oktober | Vengaboys | We like to party (The Vengabus) |
| 31 oktober | Scooter | How much is the fish |
| 7 november | Scooter | How much is the fish |
| 14 november | Scooter | How much is the fish |
| 21 november | Vengaboys | Boom boom boom boom |
| 28 november | Vengaboys | Boom boom boom boom |
| 5 december | Vengaboys | Boom boom boom boom |
| 12 december | Cher | Believe |
| 19 december | Emilia | Big big world |
| 26 december | Emilia | Big big world |
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