Francisco Javier Arana Castro (American Spanish: [f?an'sisko xa'ßje? a'?ana 'kast?o]; 3 December 1905 – 18 July 1949) was a Guatemalan military leader and one of the three members of the revolutionary junta that ruled Guatemala from 20 October 1944 to 15 March 1945 during the early part of the Guatemalan Revolution.
A major in the Guatemalan army under the dictator Jorge Ubico, he allied with a progressive faction of the army to topple Ubico's successor Federico Ponce Vaides.