| Acronym | Definition |
|---|
| UMCA | Ultra-Marathon Cycling Association, Inc. |
| UMCA | Universities' Mission to Central Africa |
| UMCA | University of Missouri Center for Agroforestry |
| UMCA | Upper Midwest Conservation Association (Minneapolis, MN) |
| UMCA | University of Missouri-Columbia |
| UMCA | Urban Marketing Corporation of America |
| UMCA | Universidad Metropolitana Castro Carazo |
| UMCA | Undergraduate Management Consulting Association |
| UMCA | United Methodist Church of Anoka (Minnesota) |
| UMCA | Undergraduate Management and Consulting Association |
| UMCA | Umbellularia Californica (California laurel) |
| UMCA | Utah Municipal Clerks' Association |
| UMCA | University Medical Center Alliance |
| UMCA | United Molokan Christian Association |
| UMCA | Undeb Myfyrwyr Cymraeg Aberystwyth |
| UMCA | University of Maryland Center on Aging (College Park, MD) |
| UMCA | United Masonry Contractors Association (Garland, TX) |
| UMCA | United Medical Center for Afghans |
| UMCA | University of Minnesota Clinical Associates |
| UMCA | Umatilla Chemical Activity |
| UMCA | Utah Mechanical Contractors Association |
| UMCA | United Masonry Contractors of America |
| UMCA | Unspecified Minor Construction, Army |
| UMCA | University of Missouri Central Administration |
| UMCA | Upper Middle Class American |