Saab
S.E. Saunders Ltd
Saunders-Roe
Scheibe Flugzeugbau
Schempp-Hirth Flugzeugbau GmbH
Schweizer Aircraft Corporation
Scottish Aviation
SEPECAT
Shenyang Aircraft Corporation (SAC)
Short Brothers
SIAI-Marchetti
Sikorsky
Simmonds Aircraft
Skandinavisk Aero Industri
Slingsby Aviation
SOCATA
Sopwith Aviation Co.
SPAD
Spartan Aircraft Company (UK)
Stampe et Vertongen
Stearman Aircraft
Stinson Aircraft Co.
Sud Aviation
Sukhoi
Supermarine Aviation Works (Vickers) Ltd
Szybowcowy Zakład Doświadczalny (SZD)
