Athletics at the 2003 Pan American Games – Women's 800 metres

{{Infobox Pan American Games event

|event = Women's 800 metres

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|win_label = Winning time

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{{Athletics2003PAG}}

The final of the Women's 800 metres event at the 2003 Pan American Games took place on Wednesday August 6, 2003, with the heats staged a day earlier. Marian Burnett won the only silver medal for Guyana at the 2003 Pan American Games.