| Date | Artist - Title | Weeks at #1 |
|---|---|---|
1998 Number One Songs | ||
| – | Spice Girls - Too Much | 2 |
| – | Various Artists - Perfect Day | 3 (1) |
| – | All Saints - Never Ever | 1 |
| – | Oasis - All Around The World | 1 |
| – | Usher - You Make Me Wanna... | 1 |
| – | Aqua - Doctor Jones | 2 |
| – | Celine Dion - My Heart Will Go On | 2 (1) |
| – | Cornershop - Brimful Of Asha | 1 |
| – | Madonna - Frozen | 1 |
| – | Celine Dion - My Heart Will Go On | 2 (1) |
| – | Run DMC vs Jason Nevins - It's Like That | 6 |
| – | Boyzone - All That I Need | 1 |
| – | All Saints - Under The Bridge / Lady Marmalade | 2 (1) |
| – | Aqua - Turn Back Time | 1 |
| – | All Saints - Under The Bridge / Lady Marmalade | 2 (1) |
| – | Tamperer feat. Maya - Feel It | 1 |
| – | B*Witched - C'est La Vie | 2 |
| – | Baddiel, Skinner and Lightning Seeds - Three Lions '98 | 3 |
| – | Billie - Because We Want To | 1 |
| – | Another Level - Freak Me | 1 |
| – | Jamiroquai - Deeper Underground | 1 |
| – | Spice Girls - Viva Forever | 2 |
| – | Boyzone - No Matter What | 3 |
| – | Manic Street Preachers - If You Tolerate This Your Children Will Be Next | 1 |
| – | All Saints - Bootie Call | 1 |
| – | Robbie Williams - Millennium | 1 |
| – | Melanie B feat. Missy Elliott - I Want You Back | 1 |
| – | B*Witched - Rollercoaster | 2 |
| – | Billie - Girlfriend | 1 |
| – | Spacedust - Gym And Tonic | 1 |
| – | Cher - Believe | 7 |
| – | B*Witched - To You I Belong | 1 |
| – | Spice Girls - Goodbye | 1 |
| – | Chef - Chocolate Salty Balls | 1 |
32 different songs hit number one in the UK during 1998.
