SDR (plural SDRs)
- (finance) Special Drawing Right
- (electronics) Initialism of single data rate.
- (computing) single data rate computer RAM
- (mathematics) system of distinct representatives
- (telecommunications) Abbreviation of software defined radio.
- Special Drawing Rights on Wikipedia.Wikipedia:Special Drawing Rights
- (computing): SDRAM
- (computing): SIMM , DIMM , SODIMM