OIF

OIF may refer to:

Ocean iron fertilization, the intentional introduction of iron to the upper ocean to stimulate a phytoplankton bloom Office for Intellectual Freedom, a department of the American Library Association Operation Iraqi Freedom, the United States' code-name for the Iraq War from 2003 to 2010 Optical Internetworking Forum, a non-profit industry organization founded in 1998 Organisation internationale de la Francophonie, an international organization representing Francophonic and Francophilic countries and regions