Ladislao Diwa y Nocon (June 27, 1863 − March 12, 1930) was a Filipino patriot who was among the founders of the Katipunan that initiated the Philippine Revolution against Spain in 1896.

Although they were members of La Liga which espoused the peaceful reform of the Spanish colonial government, Diwa, Bonifacio and Plata were apparently convinced that an armed uprising was the only way to attain independence from Spain.

Adopting the symbolic name Balete, Diwa formed the Katipunan's first triangle with Bonifacio and Plata and became the society's fiscal.

He later formed a triangle of his own with Román Basa and Teodoro Gonzales, who would respectively become president and councilor of the Katipunan's supreme council.

Diwa contributed to the Katipunan's expansion to the countryside because of his transfer to the court of a justice of the peace in Pampanga province.

Four days later, Diwa was unexpectedly released in a prisoner exchange between the Spanish authorities and the Filipino revolutionists.

He fled to Cavite to join the revolutionary troops of Mariano Trías but the entire province was then under siege and he had to covertly cross enemy lines.