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" | Jive | |
| 10 January | "Avenging Angels" | Gut | |
| 17 January | |||
| 24 January | "All Around the World" | Creation | |
| 31 January | |||
| 7 February | "Crazy Little Party Girl" | Jive | |
| 14 February | "All I Have to Give" | Backstreet Boys | |
| 21 February | |||
| 28 February | "Brimful of Asha" | Wiiija | |
| 7 March | |||
| 14 March | |||
| 21 March | Profile | ||
| 28 March | |||
| 4 April | |||
| 11 April | |||
| 18 April | |||
| 25 April | |||
| 2 May | "Feel It" | Pepper | |
| 9 May | |||
| 16 May | |||
| 23 May | |||
| 30 May | |||
| 6 June | |||
| 13 June | |||
| 20 June | "The Rockafeller Skank" | Skint | |
| 27 June | |||
| 4 July | |||
| 11 July | |||
| 18 July | "Be Careful" | Jive | |
| 25 July | "Café del Mar 98" | Hooj Choonz | |
| 1 August | "Teardrops" | Fresh | |
| 8 August | |||
| 15 August | "El Nino" | Xtravaganza | |
| 22 August | "Teardrops" | Lovestation | Fresh |
| 29 August | |||
| 5 September | "One For Sorrow" | Steps | |
| 12 September | "Crush" | Edel | |
| 19 September | "Sex on the Beach" | Control | |
| 26 September | |||
| 3 October | |||
| 10 October | |||
| 17 October | "Gangster Trippin'" | Fatboy Slim | Skint |
| 24 October | |||
| 31 October | |||
| 7 November | "Would You...?" | 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" | V2 | |
| 28 November | "Heartbeat / Tragedy" | Steps | Jive |
| 5 December | |||
| 12 December | |||
| 19 December | |||
| 26 December |