2006 IAAF World Indoor Championships – Men's 400 metres

Heats

First 2 of each heat (Q) and the next 2 fastest (q) qualified for the semifinals.

Rank	Heat	Name	Nationality	Time	Notes
1	1	California Molefe	Botswana	45.74	Q, WL, NR
2	1	Dmitry Petrov	Russia	46.29	Q
3	5	Davian Clarke	Jamaica	46.37	Q
4	3	Chris Brown	Bahamas	46.64	Q
5	4	Milton Campbell	United States	46.67	Q
6	5	David McCarthy	Ireland	46.68	Q
7	3	Vladislav Frolov	Russia	46.69	Q
8	2	Alleyne Francique	Grenada	46.79	Q
9	4	Daniel Dąbrowski	Poland	46.80	Q
10	2	Marcin Marciniszyn	Poland	46.88	Q
11	3	Carlos Santa	Dominican Republic	47.00	q
12	2	Ruwen Faller	Germany	47.02	q
13	1	Oleksiy Rachkovsky	Ukraine	47.13
14	4	Arismendy Peguero	Dominican Republic	47.32	PB
15	4	Chris Lloyd	Dominica	47.33	SB
16	1	Santiago Ezquerro	Spain	47.36
17	5	David Canal	Spain	47.38
18	4	Andrés Silva	Uruguay	47.50	NR
19	1	David Gillick	Ireland	47.61	SB
20	5	Anderson Jorge dos Santos	Brazil	48.19
21	2	Valentin Bulichev	Azerbaijan	48.26
22	3	Isaac Yaya	French Polynesia	48.45	NR
23	4	Brice Panel	France	48.52
24	1	Chon Kin Sou	Macau	49.95	NR
25	5	Nicholas Mangham	Palau	54.80	NR
	2	Sanjay Ayre	Jamaica	DQ
	3	Asad Iqbal	Pakistan	DQ
	5	LaShawn Merritt	United States	DQ

Semifinals

First 3 of each semifinal qualified directly (Q) for the final.

Rank	Heat	Name	Nationality	Time	Notes
1	1	Alleyne Francique	Grenada	45.86	Q
2	1	California Molefe	Botswana	46.02	Q
3	2	Chris Brown	Bahamas	46.10	Q
4	1	Milton Campbell	United States	46.22	Q
5	2	Davian Clarke	Jamaica	46.23	Q, SB
6	2	Dmitry Petrov	Russia	46.44	Q
7	1	Daniel Dąbrowski	Poland	46.61
8	1	Ruwen Faller	Germany	46.67
9	2	Marcin Marciniszyn	Poland	46.97
10	1	Vladislav Frolov	Russia	47.11
10	2	Carlos Santa	Dominican Republic	47.11
10	2	David McCarthy	Ireland	47.11

Final

Rank	Name	Nationality	Time	Notes
	Alleyne Francique	Grenada	45.54	SB
	California Molefe	Botswana	45.75
	Chris Brown	Bahamas	45.78	NR
4	Davian Clarke	Jamaica	45.93	SB
5	Milton Campbell	United States	46.15	SB
6	Dmitry Petrov	Russia	47.33