Isaac Araneta Lacson (28 July 1889 - 4 October 1964)[1] was a Filipino politician who served as the Governor of Negros Occidental during the American occupation.

Lacson was born on July 28, 1889 in Talisay, Negros Occidental to General Aniceto Lacson, a revolutionary hero who then served as the President of the short lived Republic of Negros during the Philippine Revolution, and Rosario Araneta, a matron of the Araneta clan of the Philippines.

He attended the Ateneo de Manila and graduated in 1910 from the San Juan de Letran College with a Bachelor of Arts degree.

He then became Governor of Negros Occidental[1] from 1931 to 1934, when he was elected to the Philippine Senate as the representative of the 8th senatorial district composed of the Negros provinces, Antique and Palawan.

[2] As a senator, he served as chairman of the committees on banks and corporations and franchises.