| SORELLI | MOTOCICLETA | ITALIA | BRESCIA - BRESCIA | 1924 |
| SORO | SIDECAR | ESPAÑA | BARCELONA - BARCELONA | 1941 |
| SOS | MOTOCICLETA | REINO UNIDO | WORCESTER - WORCESTERSHIRE | 1927 |
| SOUPLEX | MOTOCICLETA | BÉLGICA | ANDERLECHT - BRUSSELS-HOOFDSTEDELIJK GEWEST | 1939 |
| SOUTH HANTS | BICIMOTOR | REINO UNIDO | PORTSMOUTH - HAMPSHIRE | 1903 |
| SOUTHERN CROSS (Manchester) | TRICICLO | REINO UNIDO | MANCHESTER - LANCASHIRE | |
| SOUTHERN CROSS (Sydney/Toowoomba) | MOTOCICLETA | AUSTRALIA | SYDNEY - NEW SOUTH WALES | 1925 |
| SOUTHEY | MOTOCICLETA | REINO UNIDO | BERKHAMSTED - BIRMINGHAM - HERTFORDSHIRE - WARWICKSHIRE | 1905 |
| SOUVERAIN | MOTOR | FRANCIA | - | 1902 |
| SOVEREIGN | MOTOCICLETA | AUSTRALIA | LAUNCESTON - TASMANIA | 1907 |
| SOYER | MOTOCICLETA | FRANCIA | COLOMBES - SEINE | 1919 |
| SPA-JAP | MOTOCICLETA | REINO UNIDO | SCARBOROUGH - NORTH YORKSHIRE | 1921 |
| SPACKE | MOTOCICLETA | USA | INDIANAPOLIS - INDIANA | 1909 |
| SPAIRANI | VELOMOTOR | ITALIA | PAVIA - PAVIA | 1950 |
| SPARK (Hamamatsu) | MOTOCICLETA | JAPÓN | HAMAMATSU - SHIZUOKA-KEN | 1952 |
| SPARK (London) | MOTOCICLETA | REINO UNIDO | LONDON - LONDON COUNTY | 1903 |
| SPARKBROOK | MOTOCICLETA | REINO UNIDO | COVENTRY - WARWICKSHIRE | 1883-1912 |
| SPARTA | CICLOMOTOR | PAISES BAJOS | APELDOORN - GELDERLAND | 1917 - 1927 |
| SPARTAN | MOTOCICLETA | REINO UNIDO | ASTWOOD-REDDITCH - WORCESTERSHIRE | 1920 |
| SPARTING | VELOMOTOR | FRANCIA | RENNES - ILLE-et-VILAINE | 1950 |