2006 IAAF World Indoor Championships – Women's 400 metres

Heats

First 2 of each heat (Q) and the next 4 fastest (q) qualified for the semifinals.

Rank	Heat	Name	Nationality	Time	Notes
1	1	Vania Stambolova	Bulgaria	51.04	Q
2	3	Olesya Forsheva	Russia	51.18	Q
3	1	Novlene Williams	Jamaica	51.57	Q, PB
4	1	Ilona Usovich	Belarus	51.71	q, PB
5	2	Natalya Nazarova	Russia	51.77	Q
6	2	Mariyana Dimitrova	Bulgaria	52.07	Q
7	4	Sanya Richards	United States	52.25	Q
8	4	Christine Amertil	Bahamas	52.33	Q
9	2	Monika Bejnar	Poland	52.36	q, NR
10	1	Angela Moroşanu	Romania	52.49	q
11	4	Grażyna Prokopek	Poland	52.89	q, SB
12	2	Danijela Grgić	Croatia	52.91	PB
13	3	Claudia Hoffmann	Germany	53.05	Q
14	3	Mary Wineberg	United States	53.07
15	3	Ronetta Smith	Jamaica	53.57
16	4	Aliann Pompey	Guyana	53.72
17	3	Sandrine Thiébaud-Kangni	Togo	53.83	SB
18	2	Klodiana Shala	Albania	54.21
	1	Alissa Kallinikou	Cyprus	DNS

Semifinals

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

Rank	Heat	Name	Nationality	Time	Notes
1	2	Olesya Forsheva	Russia	50.61	Q
2	1	Vania Stambolova	Bulgaria	50.66	Q
3	1	Natalya Nazarova	Russia	50.67	Q
4	2	Christine Amertil	Bahamas	51.09	Q, PB
5	1	Novlene Williams	Jamaica	51.25	Q, PB
6	1	Ilona Usovich	Belarus	51.53	PB
7	2	Mariyana Dimitrova	Bulgaria	52.17	Q
8	1	Claudia Hoffmann	Germany	52.32
9	2	Sanya Richards	United States	52.46
10	2	Angela Moroşanu	Romania	52.57
11	2	Monika Bejnar	Poland	52.60
12	1	Grażyna Prokopek	Poland	53.64

Final

Rank	Name	Nationality	Time	Notes
	Olesya Forsheva	Russia	50.04	CR
	Vania Stambolova	Bulgaria	50.21	NR
	Christine Amertil	Bahamas	50.34	AR
4	Natalya Nazarova	Russia	50.60
5	Novlene Williams	Jamaica	51.82
6	Mariyana Dimitrova	Bulgaria	52.66