1989 IAAF World Indoor Championships – Men's 400 metres

The men's 400 metres event at the 1989 IAAF World Indoor Championships was held at the Budapest Sportcsarnok in Budapest on 4 and 5 March 1989.^{[citation needed]}

The winning margin was 0.50 seconds which as of July 2024 remains the greatest winning margin in the men's 400 metres at these championships.

Medalists

Gold	Silver	Bronze
Antonio McKay United States	Ian Morris Trinidad and Tobago	Cayetano Cornet Spain

The first 2 of each heat (Q) and next 2 fastest (q) qualified for the semifinals.^[1]

Rank	Heat	Name	Nationality	Time	Notes
1	3	Cayetano Cornet	Spain	46.64	Q
2	5	Brian Whittle	Great Britain	46.69	Q
3	5	Slobodan Branković	Yugoslavia	46.69	Q
4	1	Antonio McKay	United States	46.86	Q
5	2	Howard Burnett	Jamaica	46.91	Q
6	5	Bert Cameron	Jamaica	46.93	q
7	2	Jörg Vaihinger	West Germany	47.00	Q
7	4	Gabriel Tiacoh	Ivory Coast	47.00	Q
9	1	Ian Morris	Trinidad and Tobago	47.09	Q
10	1	Arjen Visserman	Netherlands	47.11	q
11	3	Alemayehu Gudeta	Ethiopia	47.14	Q, NR
12	4	Clarence Daniel	United States	47.20	Q
13	5	Ervin Katona	Hungary	47.33
14	3	Todd Bennett	Great Britain	47.35
15	3	Tomasz Jędrusik	Poland	47.36
16	2	Gusztáv Menczer	Hungary	47.43
17	1	Antonio Sánchez	Spain	47.60
18	2	Romeo Gido	Philippines	47.63	NR
19	3	Klaus Just	West Germany	47.67
20	5	Anton Skerritt	Canada	47.69
21	2	Patrick Delice	Trinidad and Tobago	47.86
22	4	Takahiro Watanabe	Japan	47.97
23	4	Troy Douglas	Bermuda	48.46	NR
24	2	Ahmed Abdelhalim Ghanem	Egypt	48.63
25	1	Luis Karim Toledo	Mexico	48.65	NR
26	4	Gerson Souza	Brazil	49.04

First 3 of each semifinal (Q) qualified directly for the final.^[2]

Rank	Heat	Name	Nationality	Time	Notes
1	1	Antonio McKay	United States	46.06	Q
2	1	Cayetano Cornet	Spain	46.30	Q
3	2	Slobodan Branković	Yugoslavia	46.49	Q
4	1	Ian Morris	Trinidad and Tobago	46.52	Q, NR
5	2	Gabriel Tiacoh	Ivory Coast	46.69	Q, NR
6	2	Brian Whittle	Great Britain	46.71	Q
7	2	Arjen Visserman	Netherlands	46.94
8	1	Alemayehu Gudeta	Ethiopia	46.96	NR
9	1	Jörg Vaihinger	West Germany	47.01
10	2	Clarence Daniel	United States	47.03
11	1	Howard Burnett	Jamaica	47.18
12	2	Bert Cameron	Jamaica	47.78

Rank	Lane	Name	Nationality	Time	Notes
	5	Antonio McKay	United States	45.59	CR
	2	Ian Morris	Trinidad and Tobago	46.09	NR
	4	Cayetano Cornet	Spain	46.40
4	6	Slobodan Branković	Yugoslavia	46.48
5	3	Brian Whittle	Great Britain	46.78
6	1	Gabriel Tiacoh	Ivory Coast	47.35