Abadilla (March 10, 1906 – August 26, 1969), commonly known as AGA, was a Filipino poet, essayist and fiction writer.
Critic Pedro Ricarte referred to Abadilla as the father of modern Philippine poetry, and was known for challenging established forms and literature's "excessive romanticism and emphasis on rhyme and meter".
Abadilla helped found the Kapisanang Panitikan in 1935 and edited a magazine called Panitikan.
His Ako ang Daigdig collection of poems is one of his better known works.