See main article: 2009 US Open (tennis).
Noppawan Lertcheewakarn and Sandra Roma were the defending champions, but Roma chose not to participate in the Juniors that year.
Lertcheewakarn partnered with Elena Bogdan, but Valeriya Solovyeva and Maryna Zanevska defeated them in the final 1–6, 6–3 [10–7].