| Acronym | Definition |
|---|
| UCID➣Unione Cristiana Imprenditori Dirigenti (Italian: Christian Union of Business Executives) |
| UCID➣Utrecht Center for Infection Dynamics (Utrecht, Netherlands) |
| UCID➣Universal Call ID (Avaya) |
| UCID➣User-Centered Information Design (software usability) |
| UCID➣User-Centered Interface Design |
| UCID➣University of Chicago Identification Card (University of Chicago; Chicago, IL) |
| UCID➣User-Controlled Interface Device |
| UCID➣Unrestricted Configuration Interaction with Single and Double Excitations |