OLIS
| Acronym | Definition |
|---|---|
| OLIS | on Line Information Service |
| OLIS | Office of Library and Information Services (various universities) |
| OLIS | Oxford Libraries Information System |
| OLIS | Ontario Laboratory Information System (Canada) |
| OLIS | On-Line Information Services (various locations) |
| OLIS | On-Line Instrument Systems, Inc. (Bogart, GA) |
| OLIS | On-Line Insurance System (Canada) |