RDN
RDN , RdN or Rdn stands for:
- Double use Red Holstein , breed key a domestic cattle breed
- Radiodiffusion Nationale , a former French broadcaster
- Council of Nations , an international organization made up of virtual states
- Standard roof pitch , the roof pitch up to which a roof covering has generally proven to be rainproof. see roof pitch # regular roof pitch
- Regional District of Nanaimo , a district in the Canadian province of British Columbia
- Reich triangular network, forerunner of the German main triangular network
- Relative Distinguished Name , a technical term from the IT sector
- Rockin da North , a Finnish hip hop group
- Three-phase collector motor , or adjustable three-phase shunt motor, a special but outdated type of electric motor
- Side note, a scholion on the edge of a text