Anacleto Díaz (November 20, 1878 – February 10, 1945) was a Filipino jurist who served as an Associate Justice of the Supreme Court of the Philippines.

[1] In 1927, while serving as a judge, Díaz was appointed to head a commission tasked with revising the penal code of the Philippines.

Díaz was appointed to the Supreme Court of the Philippines by the American President Franklin D. Roosevelt on July 20, 1933.

The ensuing Japanese invasion of the Philippines in December 1941 effectively prevented the Supreme Court organized under the Commonwealth government.

[2] Two days later, Diaz's colleague on the Court, Antonio Villa-Real, was murdered by Japanese forces in nearby Pasay.