Guillermo Flavier Pablo (June 25, 1886 – August 2, 1982)[2] was a Filipino jurist and politician who served as an Associate Justice of the Supreme Court from 1945 to 1955.

He earned his law degree from the Escuela de Derecho de Manila (now Manila Law College) and was admitted to the Philippine bar on October 8, 1908.

The following year, he was elected as a representative from Zambales to the Philippine Assembly, winning re-election in 1919.

In 1945, he was appointed by President Sergio Osmeña to the Court of First Instance of Rizal and Bataan.

[4] In June 1945, President Osmeña named Pablo to the Supreme Court as an Associate Justice.