UDP
UDP stands for:
- un-degradable protein, see rumen-resistant protein
- União Democrática Popular , a Portuguese party
- United Democratic Party (Belize) , a party in Belize
- United Democratic Party (Gambia) , a Gambian party
- United Democratic Party (South Korea) , a party in South Korea that emerged from the Uri Party
- Diego Portales University , Chilean private university
- Enterprise Germany , a former small German party
- Uridine diphosphate , a nucleotide
- Usenet Death Penalty, the joint blockade of a Usenet server or provider by the others
- User Datagram Protocol , a network protocol