These are The Official UK Charts Company UK Official Indie Chart number one hits of 1998.[1]
| Issue date | Song | Artist | Record Label |
|---|---|---|---|
| 3 January | "5,6,7,8" | Steps | Jive |
| 10 January | "Avenging Angels" | Space | Gut |
| 17 January | |||
| 24 January | "All Around the World" | Oasis | Creation |
| 31 January | |||
| 7 February | "Crazy Little Party Girl" | Aaron Carter | Jive |
| 14 February | "All I Have to Give" | Backstreet Boys | |
| 21 February | |||
| 28 February | "Brimful of Asha" | Cornershop | Wiiija |
| 7 March | |||
| 14 March | |||
| 21 March | "It's Like That | Run–D.M.C. vs. Jason Nevins | Profile |
| 28 March | |||
| 4 April | |||
| 11 April | |||
| 18 April | |||
| 25 April | |||
| 2 May | "Feel It" | The Tamperer featuring Maya | Pepper |
| 9 May | |||
| 16 May | |||
| 23 May | |||
| 30 May | |||
| 6 June | |||
| 13 June | |||
| 20 June | "The Rockafeller Skank" | Fatboy Slim | Skint |
| 27 June | |||
| 4 July | |||
| 11 July | |||
| 18 July | "Be Careful" | Sparkle featuring R. Kelly | Jive |
| 25 July | "Café del Mar 98" | Energy 52 | Hooj Choonz |
| 1 August | "Teardrops" | Lovestation | Fresh |
| 8 August | |||
| 15 August | "El Nino" | Agnelli & Nelson | Xtravaganza |
| 22 August | "Teardrops" | Lovestation | Fresh |
| 29 August | |||
| 5 September | "One For Sorrow" | Steps | |
| 12 September | "Crush" | Jennifer Paige | Edel |
| 19 September | "Sex on the Beach" | T-Spoon | Control |
| 26 September | |||
| 3 October | |||
| 10 October | |||
| 17 October | "Gangster Trippin'" | Fatboy Slim | Skint |
| 24 October | |||
| 31 October | |||
| 7 November | "Would You...?" | Touch and Go | V2 |
| 14 November | "If You Buy This Record (Your Life Will Be Better)" | The Tamperer featuring Maya | Pepper |
| 21 November | "The Bartender and the Thief" | Stereophonics | V2 |
| 28 November | "Heartbeat / Tragedy" | Steps | Jive |
| 5 December | |||
| 12 December | |||
| 19 December | |||
| 26 December |