Athletics at the 2003 Pan American Games – Men's 400 metres

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The final of the Men's 400 metres event at the 2003 Pan American Games took place on Friday August 8, 2003, with the heats staged a day earlier in the Juan Pablo Duarte Olympic Stadium in Santo Domingo, Dominican Republic.

Medalists

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World Record	{{flagathlete\|Michael Johnson\|USA}}	43.18	August 26, 1999	{{flagicon\|ESP}} Seville, Spain
Pan Am Record	{{flagathlete\|Ronnie Ray\|USA}}	44.45	October 18, 1975	{{flagicon\|MEX}} Mexico City, Mexico

rowspan="2"\|Rank !rowspan="2"\|Athlete !colspan="2"\|Heats !Final
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Time !Rank !Time
1	align=left\| {{flagPASOathlete\|Mitch Potter\|USA\|2003}}	45.62	2	45.11
2	align=left\| {{flagPASOathlete\|Yeimer López\|CUB\|2003}}	45.69	3	45.13
3	align=left\| {{flagPASOathlete\|Alleyne Francique\|GRN\|2003}}	45.31	1	45.51
4	align=left\| {{flagPASOathlete\|Adam Steele\|USA\|2003}}	45.83	6	45.72
5	align=left\| {{flagPASOathlete\|Shane Niemi\|CAN\|2003}}	45.89	7	45.78
6	align=left\| {{flagPASOathlete\|Carlos Yohelín Santa\|DOM\|2003}}	45.82	5	45.85
7	align=left\| {{flagPASOathlete\|Michael Campbell\|JAM\|2003}}	45.79	4	46.10
8	align=left\| {{flagPASOathlete\|Davian Clarke\|JAM\|2003}}	45.93	8	46.17
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9	align=left\| {{flagPASOathlete\|Glauder Garzón\|CUB\|2003}}	45.99	9
10	align=left\| {{flagPASOathlete\|Chris Lloyd\|DMA\|2003}}	46.53	10
11	align=left\| {{flagPASOathlete\|Dennis Darling\|BAH\|2003}}	46.59	11
12	align=left\| {{flagPASOathlete\|Damion Barry\|TRI\|2003}}	46.79	12
13	align=left\| {{flagPASOathlete\|Mauricio Mery\|CHI\|2003}}	46.92	13
14	align=left\| {{flagPASOathlete\|Geronimo Goeloe\|AHO\|2003}}	47.61	14
15	align=left\| {{flagPASOathlete\|Jonnie Lowe\|HON\|2003}}	47.78	15 Honduran national record
16	align=left\| {{flagPASOathlete\|Kenneth Telemaque\|ISV\|2003}}	48.85	16
17	align=left\| {{flagPASOathlete\|Cristian Gutiérrez\|ECU\|2003}}	49.88	17

[https://web.archive.org/web/20110725022827/http://www.athlecac.org/estadisticas/resultsMeet.asp?Meet=784 Results]
[http://www.usatf.org/events/2003/PanAmericanGames/results/day3.asp usatf]

{{DEFAULTSORT:Athletics at the 2003 Pan American Games - Men's 400 metres}}