The 1998 Individual Long Track/Grasstrack World Championship was the 28th edition of the FIM speedway Individual Long Track World Championship.^[1][2]

The world title was won by Kelvin Tatum of England.^[3][4]

Round	Date	Venue
1	4 Jul	Aduard
2	13 Jul	Marmande
3	19 Jul	Abingdon-on-Thames
4	6 Sep	Scheeßel
5	27 Sep	Mühldorf

Pos	Rider	Round 1	Round 2	Round 3	Round 4	Round 5	Total Pts
1	Kelvin Tatum	25	16	25	25	13	104
2	Robert Barth	18	25	16	14	20	93
3	Steve Schofield	16	20	18	13	18	85
4	Gerd Riss	13	1	x	20	25	59
5	Antonín Šváb Jr.	20	4	14	8	11	57
6	Matthias Kröger	12	12	9	12	12	57
7	Glenn Cunningham	5	18	12	18	x	53
8	Simon Cross	14	13	13	5	x	45
9	Massimo Mora	10	10	8	9	5	42
10	Simon Wigg	7	6	11	x	16	40
11	Zdenek Schneiderwind	6	14	6	3	10	39
12	Bernd Diener	8	x	7	16	7	38
13	Uppie Bos	9	x	5	11	8	33
14	Shane Parker	0	9	10	2	9	30
15	Ralf Loding	4	5	3	6	4	22
16	Paul Hurry	x	x	20	x	x	20
17	Maik Groen	11	3	1	x	1	16
18	Detlaf Conradi	1	2	x	7	6	16
19	Christophe Dubernard	x	8	4	1	2	15
20	Herbert Rudolph	x	x	x	x	14	14
21	Philippe Bergé	x	11	x	x	x	11
22	Gunther Bunning	x	x	x	10	x	10
23	Stéphane Trésarrieu	x	7	x	x	x	7
24	Heiko Muller	x	x	x	4	x	4
25	Theo Pijper	3	x	x	x	x	3
26	Otto Niedermeier	x	x	x	x	3	3
27	Steven van der Helm	2	x	x	x	x	2
28	Colin Earl	x	x	2	x	x	2