| SPEAR | Security Protocol Engineering and Analysis Resource 
| Others |
| SPEAR | Self Preservation Encouraging Active Response
| Others |
| SPEAR | Shogi Pattern Evaluator And Recognizer
| Others |
| SPEAR | Social Policy Evaluation And Research
| Others |
| SPEAR | Spontaneous Protection Enabling Accelerated Response
| Others |
| SPEAR | Stanford Positron Electron Accelerating Ring
| Others |
| SPEAR | Strike Protection Evaluation and Antiair Research
| Others |
| SPEAR | Supplier Performance Evaluation And Reporting
| Others |