Het ITU wereldkampioenschap triatlon 1990 werd gehouden op 15 september 1990 in Orlando, Florida. De wedstrijd werd georganiseerd door de International Triathlon Union. Het parcours bestond uit 1,5 km zwemmen, 40 km fietsen en 10 km hardlopen.

Rang	Naam	Land	Zwemtijd	Fietstijd	Looptijd	Totaaltijd
1	Greg Welch	AUS	00:20:21	00:56:19	00:32:39	01:51:36
2	Brad Beven	AUS	00:18:56	00:57:36	00:33:54	01:52:40
3	Stephen Foster	AUS	00:20:18	00:56:17	00:33:43	01:52:46
4	Luc Van Lierde	BEL	00:20:26	00:56:17	00:33:57	01:53:01
5	Rob Barel	NED	00:20:25	00:56:19	00:34:15	01:53:11
6	Rob Mackle	USA	00:18:53	00:55:34	00:36:55	01:53:37
7	Simon Lessing	GBR	00:19:28	00:56:55	00:34:36	01:53:49
8	Danilo Palmucci	ITA	00:20:57	00:55:48	00:34:43	01:53:52
9	Nick Taylor	CAN	00:20:57	00:55:57	00:34:52	01:53:56
10	Rick Wells	NZL	00:18:52	00:57:54	00:35:20	01:54:20
11	Carlos Santamaria	ESP	00:21:04	00:56:55	00:33:42	01:54:34
12	Philippe Methlon	FRA	00:21:04	00:55:09	00:36:08	01:54:43
13	Patrick Girard	FRA	00:22:28	00:55:51	00:34:08	01:54:57
14	Vincent Jay	FRA	00:20:16	00:56:19	00:36:07	01:55:12
15	Eduardo Burguete	ESP	00:20:07	00:58:13	00:34:20	01:55:16
16	Pim Van Den Bos	NED	00:22:44	00:55:44	00:34:54	01:55:35
17	Andreas Claus	GER	00:20:29	00:55:59	00:36:13	01:55:35
18	Jos Everts	NED	00:21:06	00:57:20	00:34:56	01:55:48
19	Karel Blondeel	BEL	00:20:59	00:56:30	00:37:23	01:56:31
20	Erwin de Bruijn	NED	00:20:06	00:56:31	00:37:30	01:56:45
21	Marizio De Benedetti	ITA	00:20:33	00:56:00	00:38:00	01:57:13

Rang	Naam	Land	Zwemtijd	Fietstijd	Looptijd	Totaaltijd
1	Karen Smyers	USA	00:22:03	01:02:27	00:36:37	02:03:32
2	Carol Montgomery	CAN	00:22:01	01:02:32	00:36:36	02:03:46
3	Joy Hansen	USA	00:21:55	01:02:46	00:36:42	02:03:49
4	Erin Baker	NZL	00:21:58	01:01:33	00:38:37	02:04:30
5	Colleen Cannon	USA	00:21:59	01:02:34	00:39:04	02:05:59
6	Laurie Samuelson	USA	00:21:50	01:02:46	00:39:17	02:06:26
7	Katie Webb	USA	00:22:05	01:02:36	00:40:33	02:07:48
8	Terri Smith	CAN	00:23:04	01:03:27	00:39:09	02:08:15
9	Liz Hepple	AUS	00:22:48	01:03:45	00:39:40	02:08:45
10	Kendall Morrison	CAN	00:24:49	01:02:28	00:39:37	02:09:13
11	Thea Sybesma	NED	00:22:15	01:04:12	00:40:16	02:09:19
12	Simone Mortier	GER	00:23:07	01:03:21	00:41:35	02:10:33
13	Sylvie Muguet	FRA	00:22:02	01:04:33	00:41:58	02:11:11
14	Mandy Dean	GER	00:21:36	01:04:48	00:42:13	02:11:29
15	Sonja Krolik	GER	00:24:01	01:05:04	00:40:03	02:11:31
16	Ute Schaefer	GER	00:24:43	01:04:02	00:41:33	02:12:45
17	Isabelle Mouthon-Michellys	FRA	00:22:46	01:03:41	00:43:47	02:12:53
18	Jeasnnine De Ruysscher	BEL	00:22:37	01:03:40	00:43:27	02:09:17

Rang	Naam	Land	Totaaltijd
1	Thomas Leutenegger	SUI	01:57:40
2	Lach Vollmerhause	AUS	01:58:46
3	Stéphane Poulat	FRA	01:59:01

Rang	Naam	Land	Totaaltijd
1	Sonja Krolik	GER	02:11:32
2	Natalya Orchard	AUS	onbekend
3	Alex Stewart	NZL	onbekend

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