1988 U.S. Women's Hard Court Championships – Singles

Steffi Graf won in the final 6–4, 6–1 against Katerina Maleeva.

Seeds
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.


 * 1)  Steffi Graf (champion)
 * 2)  Helena Suková (semifinals)
 * 3) 🇺🇸 Lori McNeil (semifinals)
 * 4) 🇧🇬 Katerina Maleeva (final)
 * 5)  Natasha Zvereva (quarterfinals)
 * 6) 🇫🇷 Nathalie Tauziat (quarterfinals)
 * 7) 🇺🇸 Patty Fendick (quarterfinals)
 * 8)  Larisa Savchenko (second round)