| OSIS | Open Specification for Information Sharing | 信息共享开放规范 |
| OSIS | Open Scriptural Information Standard | 开放式圣经信息标准 |
| OSIS | Oh Shoot, It's Sunday (polite form) | 哦,射击,星期日(彬彬有礼的形式) |
| OSIS | Ocean Surveillance Information System | 海洋监视信息系统 |
| OSIS | O S I Systems, Inc. | O S I Systems公司。 |
| OSIS | Open Source Information System (now Intelink-U; US DOD) | 开放源代码信息系统（现为Intelink-U；美国国防部） |
| OSIS | Office of Science Information Services | 科学信息服务办公室 |
| OSIS | Oil Spill Information System | 漏油信息系统 |
| OSIS | One-Stop Internet Shop (European Union) | 一站式互联网商店（欧盟） |
| OSIS | Open Source Information System | 公开来源信息系统 |
| OSIS | Office of Scientific Information Service | 科学情报服务局 |
| OSIS | Organisasi Siswa Intra Sekolah (student group) | Siswa Intra Sekolah组织（学生团体） |
| OSIS | Open Shops for Information Services | 信息服务开放商店 |