Luis Irrazábal Barboza (8 August 1891 – 16 March 1958) was a Paraguayan military officer, active during the Chaco War with Bolivia.

During his time in Paraguarí, he founded a polo club there, and conducted riding shows in the nearby cities.

By September of that year, he was back in Asunción and was named commanding officer for the forces around Fort Nanawa, considered the strongest point of the Paraguayan line in the Chaco.

On January 20, 1933, the Bolivian forces began a strong offensive against Nanawa, which lasted until the 26th when it was finally called off.

As the fort was surrounded by them, Irrazábal ordered a landing strip to be cleared inside its perimeter, which allowed Paraguayan aircraft to resupply the defenders.

After the war he was appointed military attaché in Buenos Aires, and later in Santiago de Chile and Peru.