| Simms | W. | 112 Lincoln St | Oldsmobile | 13839 | Metro Private Car | 1927-28 |
| Simms Commercial Union Insurance Co | E. A. | Perth | Car | C ● 72 | Claremont Municipality | 1917-18 |
| Simms Commercial Union Insurance Co | E. A. | Perth | Car | C ● 81 | Claremont Municipality | 1917-18 |
| Simon | E. E. | 61 Bruce Street, Nedlands | Ford | 8742 | Metro Private Car | 1925-26 |
| Simon | Maurice | 561 Beaufort Street.. Perth | Precision | 61 | Metro Motorcycle | 1922-23 |
| Simon | Maurice | Manchester Lye Works Beaufort Street | Ford | 11908 | Metro Private Car | 1927-28 |
| Simonds | F. W. | - | Dodge | BK ● 118 | Bruce Rock Road Board | 1924-25 |
| Simonds | F. W. | Bruce Rock | Dodge | BK ● 118 | Bruce Rock Road Board | 1925-26 |
| Simonds | F. W. | Bruce Rock | Dodge | BK ● 118 | Bruce Rock Road Board | 1926-27 |
| Simonds | F. W. | Bruce Rock | Dodge | BK ● 118 | Bruce Rock Road Board | 1927-28 |
| Simonds | J. | Bruce Rock | Buick | BK ● 276 | Bruce Rock Road Board | 1927-28 |
| Simons | A. J. | 5 Longroyd Street, Mount Lawley | Essex | 4301 | Metro Private Car | 1924-25 |
| Simons | A. J. | 5 Longroyd Street, Mount Lawley | Essex | 7709 | Metro Private Car | 1925-26 |
| Simons | A. J. | 5 longroyd Street, Mount Lawley | Essex | 7709 | Metro Private Car | 1926-27 |
| Simons | A. J. | 5 Longroyd Street, Mount Lawley | Essex | 7709 | Metro Private Car | 1927-28 |
| Simons | W. | Police Station, Yalgoo | Morris-Cowley | YA ● 100 | Yalgoo Road Board | 1927-28 |
| Simons | W. L. | 13 Claremont Avenue, Claremont | Morris-Cowley | 13053 | Metro Private Car | 1926-27 |
| Simonsen | R. | Norwood Road, Rivervale | Overland | 9277 | Metro Private Car | 1927-28 |
| Simonson | R. | 155 Newcastle Street, Perth | Harley Davidson | 65 | Metro Motorcycle | 1922-23 |
| Simper | Frank | South Street | Ford 15-20 H.P. | F 17 | Fremantle Municipality | 1915 |
| Simper | Frank | Fremantle Markets | Buick 15-20 H.P. | F 17 | Fremantle Municipality | 1916 |
| Simper | Frank | Fremantle Markets, Fremantle | Calthorpe 15 H.P. | F 17 | Fremantle Municipal Council | 1917-18 |
| Simper | Frank | Fremantle Markets | Ford 20 H.P. | F 17 | Fremantle Municipal Council | 1919 |
| Simper | G. | Badgebup | Maxwell | KA ● 169 | Katanning Road Board | 1925-26 |
| Simper | G. | Badgebup | Maxwell | KA ● 169 | Katanning Road Board | 1926-27 |
| Simper | G. | Badgebup | Maxwell | KA ● 169 | Katanning Road Board | 1927-28 |
| Simper | H. J & F. | Fremantle Markets Fremantle | Chevrolet | 1908 | Metro Private Car | 1925-26 |
| Simper | H. J. | Fremantle Markets | Dodge | 1881 | Metro Private Car | 1926-27 |
| Simper | H. J. | Fremantle Markets | Dodge | 1881 | Metro Private Car | 1927-28 |
| Simper | H. J. & F. | Fremantle Markets | Chevrolet | 1908 | Metro Private Car | 1924-25 |
| Simper | H. J. & F. Ltd. | Marquis Street | Darracq 14 H.P. | P 794 | Perth Municipality | 1916 |
| Simper | H. T. & F. Ltd. | Stirling Street | Ford 20 H.P. | P 794 | Perth Municipality | 1919 |
| Simper | T. J. | Katanning | Ford | KA ● 104 | Katanning Road Board | 1926-27 |
| Simper | T. J. | Katanning | Ford | KA ● 104 | Katanning Road Board | 1927-28 |
| Simper Ltd | - | Stirling Street Markets | Dodge | 794 | Metro Private Car | 1923-24 |
| Simper Ltd | - | Stirling Street Markets, Perth | Ford Stan. Wagon | 1722 | Metro Private Car | 1923-24 |
| Simper Ltd | - | Stirling Street, Perth | Ford Standard Wagon | 1722 | Metro Private Car | 1924-25 |
| Simper Ltd | - | Stirling Street, Markets | Dodge | 794 | Metro Private Car | 1924-25 |
| Simper Ltd | - | Stirling Street, Markets | Dodge | 794 | Metro Private Car | 1925-26 |
| Simper Ltd | - | Stirling Street, Perth | Standard Wagon | 1722 | Metro Private Car | 1925-26 |
| Simper Ltd | - | Stirling Street, Markets | Flint | 794 | Metro Private Car | 1926-27 |
| Simper Ltd | - | Stirling Street, Perth | Standard Wagon | 1722 | Metro Private Car | 1926-27 |
| Simper Ltd | - | Stirling Street, Perth | Chevrolet Wagon | 12386 | Metro Private Car | 1927-28 |
| Simper Ltd | - | Stirling Street, Perth | Dodge | 1628 | Metro Private Car | 1927-28 |
| Simper Ltd | - | Stirling Street, Markets | Flint | 794 | Metro Private Car | 1927-28 |
| Simper Ltd | H. J & F. | Fremantle Markets Fremantle | Ford Wagon | 1860 | Metro Private Car | 1925-26 |
| Simper Ltd | H. J. & F. | Stirling Street | Ford 20 H.P. | P 794 | Perth Municipality | 1917-18 |
| Simper Ltd | H. J. & F. | Fremantle Markets | Daimler Wagon | 3207 | Metro Private Car | 1924-25 |
| Simper Ltd | H. J. & F. | Fremantle Markets Fremantle | Ford Wagon | 1860 | Metro Private Car | 1924-25 |
| Simper Ltd | H. J. & F. | Fremantle Markets | Ford | 5068 | Metro Private Car | 1924-25 |
