English abbreviations from sd to sda
- SD (Secure digital)
- s.d. (sine data (undated book))
- SD. (Sedit ("He sat"))
- SD/D (System Development and Demonstration life cycle phase)
- sd — (s) Sindhi language (ISO 639 (1 code))
- SD100ID (Sons and Daughters of the 100th Infantry Division)
- SDA (Baghdad International Airport (formerly ORBS/Saddam Int'l))
