| Acronym | Definition |
|---|
| BLO | Below |
| BLO | Blower |
| BLO | Bayerische Landesbibliothek Online (German: Bararian Regional Library Online) |
| BLO | Boston Lyric Opera |
| BLO | Booth Level Officer (elections; India) |
| BLO | Branch on Lower |
| BLO | Barbie Liberation Organization |
| BLO | Bartonella-Like Organism (pathogen) |
| BLO | Boiled Linseed Oil (finishing oil applied to wood and metal) |
| BLO | Bacteria-Like Organism |
| BLO | Back Loop Only (crochet instructions) |
| BLO | Beni-Lubero Online (political blog) |
| BLO | Border Liaison Office |
| BLO | Binary Large Object |
| BLO | Bike Like Object |
| BLO | Base Level Operations |
| BLO | Bureau Line Office (Luxembourg; business furniture and equipment) |
| BLO | Better Life Option |
| BLO | Butt Line Zero |
| BLO | Below the Line Observatory (France; marketing company) |
| BLO | Bounded Linear Operator |
| BLO | Behzad Law Office (Doha, Qatar) |
| BLO | Bacon, Lettuce, and Onion (Sandwich) |