| Seery | J. J. P. | 13 Colin Place, West Perth | Indian | 82 | Metro Motorcycle | 1922-23 |
| Sefton | B McK. | Kelmscott | Dodge | 6876 | Metro Private Car | 1924-25 |
| Sefton | B McK. | Roleystone | Dodge Truck | 6876 | Metro Private Car | 1926-27 |
| Sefton | B. | Roleystone | Dodge Truck | A-K ● 25 | Armadale-Kelmscott Road Board | 1924-25 |
| Sefton | B. | McK Roleystone | International Wagon | 6876 | Metro Private Car | 1927-28 |
| Sefton | B. McK. | Roleystone Kelmscott | R.C.H. Wagon | A-K ● 25 | Armadale-Kelmscott Road Board | 1922-23 |
| Sefton | B. McK. | Kelmscott | R.C.H. Wagon | A-K ● 25 | Armadale-Kelmscott Road Board | 1923-24 |
| Sehipp | C. K. | Narembeen | Ford Wagon | NB ● 168 | Narembeen Road Board | 1927-28 |
| Seiber | A. | Pardoo Station | B.S.A. 4¼ H.P. Motorcycle | PH ● - | Port Hedland Road Board | 1917-18 |
| Seidel Bros | - | Barbertown | Chevrolet | M ● 55 | Moora Road Board | 1924-25 |
| Seidel Bros | - | Barberton | Chevrolet | M ● 55 | Moora Road Board | 1925-26 |
| Seidel Bros | - | Barberton | Chevrolet | M ● 55 | Moora Road Board | 1926-27 |
| Seidel Bros | - | Barberton | Chevrolet | M ● 55 | Moora Road Board | 1927-28 |
| Seiler | H. E. | 9 Clifton Crescent, Mount Lawley | Maxwell | 6771 | Metro Private Car | 1925-26 |
| Seiler | H. E. | 9 CliftonCrescent, Mount Lawley | Maxwell | 6771 | Metro Private Car | 1927-28 |
| Seimons | G. W. | Bullaring | Ford | CR ● 41 | Corrigin Road Board | 1924-25 |
| Seimons | G. W. | Bullaring | Ford | CR ● 41 | Corrigin Road Board | 1925-26 |
| Seimons | G. W. | Bullaring | Ford | CR ● 41 | Corrigin Road Board | 1926-27 |
| Seimons | G. W. | Bullaring | Ford | CR ● 41 | Corrigin Road Board | 1927-28 |
| Seinor | J. F. | Bruce Rock | Ford | BK ● 59 | Bruce Rock Road Board | 1924-25 |
| Seivwright | J. A. | 6 Clifton Crescent, Mount Lawley | Brookway Wagon | 10532 | Metro Hire or Trade | 1927-28 |
| Selbourne | H. | C/o Henry Berry & Co, Bunbury | - | By 116 | Bunbury Municipality | 1924-25 |
| Selbourne | H. C. | 32 Dundas Road, Inglewood | Essex | 12710 | Metro Private Car | 1927-28 |
| Selbourne H. | - | c/o Henry Berry & Co, Bunbury | Hupmobile | BY 116 | Bunbury Municipality | 1925-26 |
| Selby | Gregory | 817 Beaufort Street, Maylands | Ford | 2053 | Metro Private Car | 1925-26 |
| Selby | Gregory | Maylands | Ford | 2053 | Metro Private Car | 1926-27 |
| Selby | Mrs C. | 38 Park Street, West Perth | Oakland | 548 | Metro Private Car | 1927-28 |
| Selden | F. | Bunbury | Indian 5 Motorcycle | By 1 | Bunbury Municipality | 1917-18 |
| Seldon | F. E. | 66 Vincent Street, Perth | Rugby | 7747 | Metro Private Car | 1925-26 |
| Seldon | F. E. | 66 Vincent Street, Perth | Rugby | 7747 | Metro Private Car | 1926-27 |
| Seldon | F. E. | 66 Vincent Street, Perth | Rugby | 7747 | Metro Private Car | 1927-28 |
| Seliwarze | H. E. | Northam | Maxwell | N ● 167 | Northam Road Board | 1925-26 |
| Selkirk | D. | Kununoppin | Fiat | KTY ● 157 | Kununoppin-Trayning Road Board | 1927-28 |
| Selkirk | L. | Schoolhouse Redcliffe | Overland | 8313 | Metro Private Car | 1925-26 |
| Selkirk | Mrs L. | Upper Swan | Austin | SW ● 22 | Swan Road Board | 1927-28 |
| Selkirk | Mrs Lilla | Upper Swan | Overland | SW ● 89 | Swan Road Board | 1926-27 |
| Selkirk | Mrs Lilla | Upper Swan | Overland | SW ● 89 | Swan Road Board | 1927-28 |
| Sellam | J. H. | 410 Ford Street, Mount Lawley | Chevrolet | 9741 | Metro Private Car | 1927-28 |
| Sellars | R. | 224 York Road, Midland Junction | Ford | 8820 | Metro Private Car | 1926-27 |
| Sellars | R. | 224 York Road, Midland Junction | Ford | 8820 | Metro Private Car | 1927-28 |
| Selleck | Florence | Jarrahdale | Overland | SJ ● 73 | Serpentine-Jarrahdale Road Board | 1926-27 |
| Seller | A. F. | Boyanup | Ford | CP ● 78 | Capel Road Board | 1927-28 |
| Seller | H. E. | 9 Clifton Crescent, Mount Lawley | Maxwell | 6771 | Metro Private Car | 1926-27 |
| Sellick | R. | Jardee | Chrysler | WA ● 44 | Manjimup Road Board | 1927-28 |
| Sellin | A. C. | 143 Matlock Street, Mount Hawthorn | Whippet | 14058 | Metro Private Car | 1926-27 |
| Sellin | A. C. | 143 Matlock Street, Mount Hawthorn | Whippet | 14058 | Metro Private Car | 1927-28 |
| Selling | A. C. | Mount Hawthorn | Ford | 2468 | Metro Private Car | 1926-27 |
| Sellins | Ada | Ellesmere Road, Mount Hawthorn | Ford | 14804 | Metro Private Car | 1927-28 |
| Sells | C. | Balingup | Rugby | BN ● 54 | Balingup Road Board | 1927-28 |
| Sells | M. | Bridgetown | Republic Wagon | B ● 132 | Bridgetown Road Board | 1925-26 |
