| Acronym | Definition |
|---|
| UDK➣Unreal Development Kit (game development software) |
| UDK➣University Daily Kansan (University of Kansas; student newspaper) |
| UDK➣Umweltdatenkatalog |
| UDK➣Unixware Development Kit |
| UDK➣Universal Development Kit |
| UDK➣Univerzalna Decimalna Klasifikacija (Croatian: Universal Decimal Classification; library science) |
| UDK➣User Defined Key |
| UDK➣Universal Developer's Kit |
| UDK➣Universaliosios Dešimtaines Klasifikacijos (Lithuania) |