English abbreviations from rsa to rsd
- RSA (Regimental Support Area)
- RSAA ((organization) Research School of Astronomy and Astrophysics, part of the Institute of Advanced Studies at the Australian National University)
- RSACi (Recreational Software Advisory Council on the Internet)
- RSAF (Royal Small Arms Factory (UK) (now closed))
- RSAI (Regional Science Association International)
- RSAIY (Running Strong for American Indian Youth)
- RSAS (RAND Strategy Assessment System)
- RSAT (Regulatory Sequence Analysis Tools)
- RSB (Railway Shop Battalion)
- RSBP (Recruit School By-Pass)
- RSC (Rotamer Side-Chain)
- RSCC (Regular Special Chinese Class)
- RSCN (Royal Society for the Conservation of Nature)
- RSCPA (Royal Society for the Prevention of Cruelty to Animals)
- RSCT (Reliable Scalable Cluster Technology (IBM))
- RSD (Reflex Sympathetic Dystrophy)
