Aircraft by manufacturer
- SAAB (Sweden)
- SAC (China)
- Safire (United States)
- SAI (Italy)
- SAI (United States)
- SAIC (China)
- Sapphire (Australia)
- Sauper Aviation (France)
- Scaled Composites (United States)
- Scheibe Flugzeugbau (Germany)
- Schweizer (United States)
- Seastar (United States)
- Seawind (United States)
- Sequoia (United States)
- SG Aviation (Italy)
- SGAU (Russia)
- Sherpa Aircraft (United States)
- ShinMaywa (Japan)
- Shorts (United Kingdom)
- SIAI (Italy)
- Silence (Germany)
- Sino Swearingen (United States)
- Sky Raider (United States)
- Skydesign (France)
- Skygear (South Korea)
- SkyStar (United States)
- Slepcev (Australia)
- Slingsby (United Kingdom)
- SlipStream (United States)
- SmartFish (Switzerland)
- Smith Aviation (Canada)
- Smolensk (Russia)
- SOCATA (France)
- Solaris (United States)
- Sonex (United States)
- Spectrum (United States)
- Sreya (United States)
- SSH (Poland)
- SSVOBB (Netherlands)
- St Just (Canada)
- Steen Aero Lab (United States)
- Stemme (Germany)
- Storch (Australia)
- Sukhoi (Russia)
- Super-Chipmunk (Canada)
- Supermarine (Australia)