The abbreviation RFD stands for:
- RFD (magazine), an American magazine
- RFD - TV, a U.S. television channel
- Rear Flank Downdraft, a rear downdraft with showers and thunderstorms, especially in the supercell
- Reduced Function Devices, a simple device in the ZigBee specification
- Royal Forest Department, a department of the Ministery of Agriculture and Cooperatives of Thailand
- Rural Delivery Service (formerly Rural Free Delivery), a mail order service for rural areas in the U.S.
- Backfat thickness, a measure for the condition evaluation of milk cows
The abbreviation stands for RfD:
- Reference dose, the maximum tolerated oral intake amount of a toxic substance.
- Request for Discussion, an amendment on Usenet