| Acronym | Definition |
|---|
| PEO➣Professional Employer Organization |
| PEO➣Philanthropic and Educational Organization for Women (PEO International) |
| PEO➣Polyethylene Oxide |
| PEO➣Professional Engineers Ontario |
| PEO➣Progressive External Ophthalmoplegia (genes) |
| PEO➣Parliamentary Education Office (Australia) |
| PEO➣Public Education and Outreach (various organizations) |
| PEO➣Postsecondary Education Opportunity (research newsletter) |
| PEO➣Program Executive Office |
| PEO➣Product Engineering Optimizer |
| PEO➣Performing Engineering Operations (UK) |
| PEO➣Prevention, Education and Outreach (healthcare) |
| PEO➣Pan-Cyprian Labor Federation (Cyprus) |
| PEO➣Publish Everything Online |
| PEO➣Professional Engineers of Oregon |
| PEO➣Pacific Economic Outlook |
| PEO➣Protect Each Other |
| PEO➣Pigs Eat Onions |
| PEO➣Promoting Educational Opportunities |
| PEO➣Pay Equity Office (Canada) |
| PEO➣Peace Enforcement Operation (includes peace keeping operations) |
| PEO➣Polar Earth Orbit |
| PEO➣Planning Engineers Organisation |
| PEO➣Plant Equipment Operator |
| PEO➣Physical Education Officer (UK) |
| PEO➣Program Executive Office/Officer |
| PEO➣Primer Estado Oculto (Spanish: Hidden First State; cryptographic protocol) |
| PEO➣Project Executive Office/Officer |
| PEO➣Plant Emergency Organization |
| PEO➣Program Enrichment Office |
| PEO➣Personnel Executive Officer |
| PEO➣Pentagon Engineering Office/Officer |
| PEO➣Product Engineering Office/Officer |
| PEO➣Program Evaluation Office/Officer |
| PEO➣Product Engineering Organization |
| PEO➣Pre-Existing Ordering |