Athletics at the 2003 Pan American Games – Women's 4 × 400 metres relay

The women's 4 × 400 metres relay event at the 2003 Pan American Games was held on August 9.

Results

Rank	Nation	Athletes	Time	Notes
	United States	Me'Lisa Barber, Moushaumi Robinson, Julian Clay, DeeDee Trotter	3:26.40
	Jamaica	Naleya Downer, Michelle Burgher, Novlene Williams, Allison Beckford	3:27.34
	Brazil	Maria Laura Almirão, Josiane Tito, Geisa Coutinho, Lucimar Teodoro	3:28.07
4	Mexico	Liliana Allen, Mayra González, Gabriela Medina, Ana Guevara	3:28.23	NR
5	Cuba	Libania Grenot, Yanelis Lara, Yudalis Díaz, Adriana Muñoz	3:28.79
6	Puerto Rico	Militza Castro, Yvonne Harrison, Sandra Moya, Yamelis Ortiz	3:32.28
7	Dominican Republic	Yelmi Martínez, Jazmín Rodríguez, Claudia Rosa Vargas, Clara Hernández	3:38.48	NR
	Colombia		DQ