| Acronym | Definition |
|---|
| SIB | Swiss Institute of Bioinformatics |
| SIB | Self Injurious Behavior |
| SIB | State Infrastructure Bank |
| SIB | Superintendencia de Bancos (Spanish: Superintendency of Banks; Guatemala) |
| SIB | South Indian Bank |
| SIB | Securities and Investments Board (UK) |
| SIB | State Investment Board |
| SIB | Simple Biosphere Model |
| SIB | Sharjah Islamic Bank |
| SIB | Service-Independent Building/Block |
| SIB | Società Italiana Brevetti |
| SIB | Società Italiana di Biochimica e Biologia Molecolare (Italian Society of Biochemistry and Molecular Biology) |
| SIB | Sidang Injil Borneo (Labuan, Malaysia church) |
| SIB | Safety Investigation Board |
| SIB | Simultaneous Integrated Boost |
| SIB | Separate Infantry Brigade |
| SIB | Société Ivoirienne de Banque (Abidjan, Ivory Coast) |
| SIB | System Information Block |
| SIB | Special Investigations Bureau (law enforcement) |
| SIB | Sports Injury Bulletin (UK) |
| SIB | Swelling Itching Brain (Devo song) |
| SIB | Ship Information Book |
| SIB | Software Information Base |
| SIB | Sterling Information Broker (Sterling Commerce) |
| SIB | Strategic Infrastructure Battalions (Iraq) |
| SIB | Strong Island Boys (movie) |
| SIB | SIDPERS Interface Branch |
| SIB | Second Injury Board |
| SIB | Scaled Index Byte |
| SIB | Systems Integration Board |
| SIB | Soft Inflatable Boat |
| SIB | Signal Indicator Bit |
| SIB | Stock Information Broker |
| SIB | Special Intelligence Brief |
| SIB | Software Implementation Board |
| SIB | Socializing Integration Buro |
| SIB | Showered Ion Beam |
| SIB | Singapore Infantry Battalion |
| SIB | Systems Information Bulletin |
| SIB | System Integrity Board |
| SIB | Side Impact Beam (automotive) |
| SIB | Single Idea Bullet (writing) |
| SIB | Standard Iron Bar |
| SIB | Sadly. I'm Bradley (band) |
| SIB | Staff Information/Briefing (sheet) |