Geronima Josefa Tomelden Pecson (December 19, 1895 – 31 July 1989) was the first woman senator of the Philippines.
She was elected in the 1947 Senatorial elections.
Apart from being a senator, Pecson was also a suffragette, an educator, a social worker, and a leader in nation-building.
Pecson was also the "first Filipino and first woman elected to the executive board of the United Nations Educational, Scientific and Cultural Organization (UNESCO)" in 1950.