FOO
| Acronym | Definition |
|---|---|
| FOO | Family of Origin |
| FOO | File Open for Output |
| FOO | Forward Observation Officer |
| FOO | Fundamental Order of Operations (math) |
| FOO | Front Office Operation |
| FOO | Foo Of Oberlin (comedy group) |
| FOO | File Open for Output (NFILE error code) |
| FOO | Field Ordering Officer |
| FOO | Flight Operations Officer |
| FOO | Flight of Opportunity |
| FOO | Follow-On Outfitting |
| FOO | Flight Operations Office |