JFO

JFO may refer to:
 * Joint Fires Observer, in the U.S. military
 * Joint Forces Operation, the Ukrainian military counter-offensive in the War in Donbas
 * Journal of Field Ornithology, a periodical
 * Crissy Field, former U.S. Army airfield in San Francisco
 * J. F. Oberlin, noted pastor and namesake of Oberlin College
 * Star Wars Jedi: Fallen Order, a 2019 Star Wars video game