Tennis at the 2011 SEA Games – Women's singles

Lavinia Tananta is the defending champion of the Women's Singles competition of the 2011 SEA Games but lost to Anna Clarice Patrimonio in the quarterfinals. Ayu-Fani Damayanti won the title after beating top seed Noppawan Lertcheewakarn in the final by 6–4, 6–1.

Seeds
All the four seeds received byes to the quarterfinals.


 * 1) 🇹🇭 Noppawan Lertcheewakarn (final)
 * 2)  Ayu-Fani Damayanti (champion)
 * 3) 🇹🇭 Nicha Lertpitaksinchai (semifinals)
 * 4)  Lavinia Tananta (quarterfinals)