The 2003 Polo Open was a women's tennis tournament played on outdoor hard courts in Shanghai, China.

It was the 5th edition of the China Open, and was a Tier II tournament on the 2003 WTA Tour.

First-seeded Elena Dementieva won the singles title.

The tournament was not part of the 2003 ATP Tour, as no male events took place.

The following players received wildcards into the singles main draw: The following players received entry from the singles qualifying draw: The following players received entry as lucky losers into the singles main draw: The following players received entry from the singles qualifying draw: The following pairs received entry as lucky losers into the doubles main draw: Elena Dementieva defeated Chanda Rubin, 6–3, 7–6(8–6) Émilie Loit / Nicole Pratt defeated Ai Sugiyama / Tamarine Tanasugarn, 6–3, 6–3