| Sunday Times Co | - | Perth | Rugby | 11678 | Metro Private Car | 1927-28 |
| Sunday Times Ltd | - | Stirling Street, Perth | Chevrolet Truck | 7088 | Metro Private Car | 1927-28 |
| Sunday Times Ltd | - | Perth | Rugby | 2991 | Metro Private Car | 1927-28 |
| Sunday Times Publishing Co | - | Stirling Street, Perth | Willy's-Knight | 614 | Metro Private Car | 1923-24 |
| Sunday Times Publishing Coy. | - | 36 Stirling Street | Hup. 16 H.P. | P 614 | Perth Municipality | 1917-18 |
| Sunday Times Publishing Coy. | - | 36 Stirling Street | Hupmobile 16-20 H.P. | P 614 | Perth Municipality | 1919 |
| Sundercock | Henry | 15 Warton Street, Cottesloe | Ford | 2674 | Metro Private Car | 1923-24 |
| Sundercombe | J. D. | 28 Park Road, Mount Lawley | Brockway | 10076 | Metro Hire or Trade | 1926-27 |
| Sundercombe | J. D. | 28 Park Road, Mount Lawley | Brockway | 10076 | Metro Hire or Trade | 1927-28 |
| Sundercombe | J. P. | 28 Park Road, Mount Lawley | Ford | 2814 | Metro Private Car | 1923-24 |
| Sundercombe | J. P. | 28 Parks Road, Mount Lawley | Ford | 2814 | Metro Private Car | 1924-25 |
| Sundercombe | J. P. | 28 Park Road, Mount Lawley | Ford | 2814 | Metro Private Car | 1925-26 |
| Sundercombe | J. P. | 28 Park Road, Mount Lawley | Ford | 2814 | Metro Private Car | 1926-27 |
| Sunderland | - | Holyoake | Ford | MY ● 84 | Murray Road Board | 1925-26 |
| Sunderland | - | Holyoake | Ford | MY ● 84 | Murray Road Board | 1926-27 |
| Sunderland | - | Holyoake | Ford | MY ● 84 | Murray Road Board | 1927-28 |
| Sunderland | A. | Holyoake | - | MY ● 84 | Murray Road Board | 1924-25 |
| Sunderland | W. J. | Fitzgerald Street | Dodge | N 27 | Northam Municipality | 1927-28 |
| Sunderoombe | J. P. | 28 Park Road, Mount Lawley | Ford | 2814 | Metro Private Car | 1927-28 |
| Sundowner & Co | Wm. | Hay Street | B.S.A. 3½ H.P. Motorcycle | P 127 | Perth Municipality | 1917-18 |
| Sundstrom | J. | Suburban Road | F.N. 1½ H.P. | SP 151 | South Perth Municipality | 1919 |
| Sundstrom | Mrs D. | 8 Bay View Terrace, Claremont | Dodge | 6786 | Metro Private Car | 1926-27 |
| Sundstrom | Mrs D. | 8 Bay View Terrace, Claremont | Dodge | 6786 | Metro Private Car | 1927-28 |
| Sunman | H. H. | Harbour Trustreet Fremantle | Citroen | 5125 | Metro Private Car | 1925-26 |
| Sunman | Hillary R | Harbour Trust Quarters F'le | Citroen | 5125 | Metro Private Car | 1927-28 |
| Sunnacks | C. B. | Yoting | Overland 26 H.P. | AV ● - | Avon Road Board | 1917-18 |
| Sunnocks | H. | 156 Attfield Street, Fremantle | Dodge | 6002 | Metro Private Car | 1924-25 |
| Sunnocks | H. | 156 Attfield Street, Fremantle | Hupmobile | 8828 | Metro Private Car | 1925-26 |
| Sunnocks | H. | 156 Attfield Street, Fremantle | Hupmobile | 8828 | Metro Private Car | 1926-27 |
| Sunnocks | H. G. | 156 Attfield Street, Fremantle | Hupmobile | 8828 | Metro Private Car | 1927-28 |
| Sunpton | Wm. J. | Bellevue Street, East Fremantle | Daimler | 3246 | Metro Vehicle for Hire | 1922-23 |
| Superior Honey | - | C/o 324 Bulwer Street, Perth | Federal | 5895 | Metro Private Car | 1925-26 |
| Superior Honey Co | - | 324 Bulwer Street, Perth | Federal | 5895 | Metro Private Car | 1926-27 |
| Superior Honey Co | - | Wanneroo | Federal-Knight Wagon | WN ● 62 | Wanneroo Road Board | 1927-28 |
| Surber | P. J. | Meckering | Ford 20 H.P. | ME 12 | Meckering Road Board | 1916 |
| Surman | B. J. | 83 Tate Street, West Leederville | Dodge | 9429 | Metro Private Car | 1926-27 |
| Surman | B. J. | 83 Tate Street, West Leederville | Dodge | 9429 | Metro Private Car | 1927-28 |
| Surman | F. L. | Cardiff | Gray | CO ● 2 | Collie Road Board | 1925-26 |
| Surprise Lead Mine | - | co/ Fordam Fremantle | Dodge | 6155 | Metro Private Car | 1924-25 |
| Surprise Mine | - | Ajana | Ford | NR ● 24 | Northampton Road Board | 1924-25 |
| Surprise Mine | - | Galena | Dodge | NR ● 55 | Northampton Road Board | 1925-26 |
| Surprise Mines | - | Galena | Ford | NR ● 21 | Northampton Road Board | 1922-23 |
| Surprise Mines | - | Galena | Ford | NR ● 21 | Northampton Road Board | 1923-24 |
| Surridge | Mrs | Denmark | Ford | DE ● 26 | Denmak Road Board | 1926-27 |
| Susman | B. | 26 Regent Street, Mount Lawley | Hupmobile | 8653 | Metro Private Car | 1925-26 |
| Susman | B. | 26 Regent Street, mount Lawley | Hupmobile | 8653 | Metro Private Car | 1926-27 |
| Susman | B. | 26 Regent Street, Mount Lawley | Hupmobile | 8653 | Metro Private Car | 1927-28 |
| Susman | Mrs B. | 30 Brookman's Buildings, Perth | Dodge | 552 | Metro Private Car | 1922-23 |
| Susman | Mrs B. | 36 Regent Street, Mount Lawley | Hupmobile | 6412 | Metro Private Car | 1924-25 |
| Susman | Mrs Bertha | 26 Regent Street, Mount Lawley | Dodge | 552 | Metro Private Car | 1923-24 |
