| Schorer | A. | No.1 State Saw Mill | Ford | WA ● 107 | Manjimup Road Board | 1927-28 |
| Schorer | A. M. | Doodlakine | Ford | KE ● 19 | Kellerberrin Road Board | 1924-25 |
| Schorer | J. | Wandering | Chevrolet Truck | WD ● 27 | Wandering Road Board | 1925-26 |
| Schorer | J. | WestPopanyinning | Chevrolet Truck | WD ● 27 | Wandering Road Board | 1926-27 |
| Schorer | J. | Wandering | Chevrolet Truck | WD ● 27 | Wandering Road Board | 1927-28 |
| Schorer | J. H. | Cuballing | Overland | CN ● 15 | Cuballing Road Board | 1923-24 |
| Schorer | J. T. | Narrogin | Overland | NA ● 40 | Narrogin Road Board | 1924-25 |
| Schorer | J. T. | Narrogin | Overland | NO ● 40 | Narrogin Road Board | 1925-26 |
| Schorer | J. T. | Narrogin | Overland | NO ● 40 | Narrogin Road Board | 1926-27 |
| Schorer | J. T. | Narrogin | Overland | NO ● 40 | Narrogin Road Board | 1927-28 |
| Schraeder | O. A. | 66 View Street, North Perth | Triumph 3½ H.P. Motorcycle | P 54 | Perth Municipality | 1915 |
| Schrodder | F. A. | Pingrup | Rugby | KT ● 24 | Kent Road Board | 1926-27 |
| Schroder | E. | 136 Campbell Street | B.S.A. H.P. Motorcycle | KMC 49 | Kalgoorlie Municipal Council | 1922-23 |
| Schroder | F. A. | Pingrup | Rugby | KT ● 24 | Kent Road Board | 1925-26 |
| Schroder | F. A. | Pingrup | Rugby | KT ● 24 | Kent Road Board | 1927-28 |
| Schroder | H. | Quairading | Ford | Q ● 38 | Quairading Road Board | 1927-28 |
| Schroeder | - | - | Triumph 3½ H.P. Motorcycle | KMC 49 | Kalgoorlie Municipality | 1915 |
| Schroeder | - | Harie Street | Triumph 3 ½ H.P. | KMC 49 | Kalgoorlie Municipality | 1916 |
| Schroeder | H. | Quairading | Ford | Q ● 38 | Quairading Road Board | 1926-27 |
| Schroeder | O. S. | 60 View Street, North Perth | Triumph 3½ H.P. Motorcycle | P 268 | Perth Municipality | 1916 |
| Schruth | A. F. S. D. | - | Dodge | P ● 15 | Perth Road Board | 1919 |
| Schruth | H. | Union Hotel, Perth | Dodge 20 H.P. | P 597 | Perth Municipality | 1917-18 |
| Schruth | W. | 1162 Hay Street, Perth | Oakland | 27 | Metro Private Car | 1922-23 |
| Schruth | W. | 1162 Hay Street, West Perth | Oakland | 27 | Metro Private Car | 1926-27 |
| Schruth | W. | 45 Havelock Street, West Perth | Oakland | 27 | Metro Private Car | 1926-27 |
| Schruth | W. | Havelock Street, West Perth | Willys-Knight | 27 | Metro Private Car | 1927-28 |
| Schruth | W. A. | Beaufort Arms Hotel | Ford 20 H.P. | P 27 | Perth Municipality | 1915 |
| Schruth | W. A. | 167 Beaufort Street | Ford 20 H.P. | P 27 | Perth Municipality | 1916 |
| Schruth | W. A. O. | 1162 Hay Street | Oakland 18 H.P. | P 27 | Perth Municipality | 1917-18 |
| Schruth | W. A. O. | 1162 Hay Street, Perth | Oakland 10 H.P. | P 27 | Perth Municipality | 1919 |
| Schruth | Wm. | 1162 Hay Street, Perth | Oakland | 27 | Metro Private Car | 1923-24 |
| Schubert | A. | 18 Altona Street, West Perth | Hudson | 9061 | Metro Private Car | 1925-26 |
| Schubert | A. | 18 Altona Street, West Leederville | Essex | 13603 | Metro Private Car | 1926-27 |
| Schubert | E. G. | Woodanilling | Ford | WO ● 63 | Woodanilling Road Board | 1926-27 |
| Schubert | E. G. | Woodanilling | Ford | WO ● 63 | Woodanilling Road Board | 1927-28 |
| Schuize | K. G. A. | Kojonup | Chevrolet | KO ● 179 | Kojonup Road Board | 1927-28 |
| Schulstad | W. | Hardy Road, Maylands | Commerce | 10051 | Metro Hire or Trade | 1926-27 |
| Schulsted | W. | Hardy Road, Maylands | Commerce | 10051 | Metro Hire or Trade | 1925-26 |
| Schultz | A. H. T. | Katanning | Studebaker | KA ● 217 | Katanning Road Board | 1925-26 |
| Schultz | A. H. T. | Katanning | Studebaker | KA ● 217 | Katanning Road Board | 1926-27 |
| Schultz | E. P. | Wickepin | Ford Truck | WK ● 159 | Wickepin Road Board | 1925-26 |
| Schultz | E. P. | Wickepin | Ford Truck | WK ● 159 | Wickepin Road Board | 1926-27 |
| Schultz | Emil | Westbury Road, South Perth | Citroen | 2731 | Metro Private Car | 1927-28 |
| Schultz | J. W. | Wickepin | Ford | WK ● 18 | Wickepin Road Board | 1925-26 |
| Schultz | J. W. | Wickepin | Ford | WK ● 18 | Wickepin Road Board | 1927-28 |
| Schultz | W. J. | Wickepin | Ford | WK ● 18 | Wickepin Road Board | 1923-24 |
| Schultz | W. J. & Sons | Wickepin | Ford | WK ● 18 | Wickepin Road Board | 1924-25 |
| Schultz. | A. H. T. | Katanning | Studebaker | KA ● 217 | Katanning Road Board | 1927-28 |
| Schultze | J. A. | Carrington Street, Claremont | - | CL 13 | Claremont Road Board | 1916 |
| Schultze | W. A. | Wubin | Chevrolet | DL ● 116 | Dalwallinu Road Board | 1926-27 |
