RDT
RDT may refer to:
Digital technology
- Real Data Transport, a proprietary data transport protocol
 - Reliable Data Transfer, in computer networking
 - Remote data transmission, the transmission of data between computers over a medium using a communications protocol
 - Remote digital terminal, in telecommunications
 
Medicine
People
Organisations
Transport
- Radlett railway station (National Rail station code), England
 - Richard Toll Airport (IATA code)