| Acronym | Definition |
|---|
| UCAI➣Unione Cattolica Artisti Italiani (Catholic Union of Italian Artists) |
| UCAI➣Union Catalog of Art Images (art database; est. 2002) |
| UCAI➣Underwriting Contract Administrators Inc. (Dartmouth, Nova Scotia, Canada) |
| UCAI➣Ulcerative Colitis Activity Index |
| UCAI➣United Christian Assemblies International (Albion, IN) |