| Robson | J. & P. | Victoria Avenue, North Fremantle | Ford | 8968 | Metro Private Car | 1926-27 |
| Robson | J. & R. | Victoria Avenue, North Fremantle | Ford Wagon | 8968 | Metro Private Car | 1927-28 |
| Robson | J. L. | 197 Barker Road, Subiaco | Sunbeam | 107 | Metro Motorcycle | 1922-23 |
| Robson | J. L. | 197 Barker Road, Subiaco | Rugby | 11448 | Metro Private Car | 1926-27 |
| Robson | J. L. | 197 Barker Road, Subiaco | Rugby | 11448 | Metro Private Car | 1927-28 |
| Robson | Jno | 78 Stirling Street, Perth | Buick | 1050 | Metro Private Car | 1923-24 |
| Robson | Jnr | 78 Stirling Street, Perth | Buick | 1050 | Metro Private Car | 1924-25 |
| Robson | John | 74 Stirling Street, Perth | Overland 25 H.P. | P 424 | Perth Municipality | 1916 |
| Rocchi | P. V | Spearwood | Essex | 8932 | Metro Private Car | 1927-28 |
| Rocco | A. | Williams | Reo Truck | WL ● 115 | Williams Road Board | 1927-28 |
| Rocha | E. M. | Spearwood | Dodge | 1577 | Metro Private Car | 1925-26 |
| Roche | E. M. | Spearwood | Dodge | 1577 | Metro Private Car | 1924-25 |
| Roche | E. W. | Alexander Road, East Fremanlte | Overland | 7328 | Metro Private Car | 1927-28 |
| Roche | H. L. | Wendouree, Kojonup | Ford | KO ● 53 | Kojonup Road Board | 1923-24 |
| Roche | H. L. | Kojonup | Dodge | KO ● 95 | Kojonup Road Board | 1924-25 |
| Roche | H. L. | Kojonup | Dodge | KO ● 95 | Kojonup Road Board | 1925-26 |
| Roche | H. L. | Kojonup | Dodge | KO ● 95 | Kojonup Road Board | 1926-27 |
| Roche | H. L. | Kojonup | Dodge | KO ● 95 | Kojonup Road Board | 1927-28 |
| Roche | J. J. & Son | Ballidu | Ford | DL ● 21 | Dalwallinu Road Board | 1923-24 |
| Roche | O. S. | Mulyie | Buick | MB ● 17 | Marble Bar Road Board | 1923-24 |
| Roche | T. | 30 Keightley Road, Subiaco | Sunbeam 12-16 H.P. | P 393 | Perth Municipality | 1916 |
| Roche & Son | J. J. | Ballidu | Ford | DL ● 21 | Dalwallinu Road Board | 1922-23 |
| Roche & Son | J. J. | Ballidu | Overland | DL ● 21 | Dalwallinu Road Board | 1924-25 |
| Roche & Sons | J. & J. | Ballidu | Overland | DL ● 21 | Dalwallinu Road Board | 1925-26 |
| Roche & Sons | J. J. | Ballidu | Overland | DL ● 21 | Dalwallinu Road Board | 1926-27 |
| Roche & Sons | J. J. | Ballidu | Overland | DL ● 21 | Dalwallinu Road Board | 1927-28 |
| Roche Bros | - | Lyall's Mill | Ford Van | CO ● 142 | Collie Road Board | 1927-28 |
| Roche Sons | J. J. | Kentketch | Overland | DL ● 160 | Dalwallinu Road Board | 1927-28 |
| Rochfort | F. | Bolton Street, East Fremantle | Dodge | 7127 | Metro Private Car | 1925-26 |
| Rock | G. A. | Kellerberrin | Ford | KE ● 120 | Kellerberrin Road Board | 1924-25 |
| Rock | G. A. | Kellerberrin | Ford | KE ● 120 | Kellerberrin Road Board | 1925-26 |
| Rock | G. A. | Kellerberrin | Ford | KE ● 120 | Kellerberrin Road Board | 1926-27 |
| Rock | G. A. | Kellerberrin | Ford | KE ● 120 | Kellerberrin Road Board | 1927-28 |
| Rock | G. E. | 15 Morriston Street, Leederville | Ford | 5264 | Metro Private Car | 1924-25 |
| Rock | G. E. | 15 Mornston Street, Leederville | Durant | 4834 | Metro Private Car | 1925-26 |
| Rock | G. E. | 15 Mornston Street, Leederville | Durant | 4834 | Metro Private Car | 1926-27 |
| Rock | G. E. | 15 Morrigton Street, Leederville | Durant | 4834 | Metro Private Car | 1927-28 |
| Rock | W. J. | 30 Woolwich Street, Leederville | Fiat Truck | 2990 | Metro Private Car | 1927-28 |
| Rock B. Farmers Co-op. | - | Bruce Rock | Dodge | BK 25 | Bruce Rock Road Board | 1923 - 1924 |
| Rockcliffe | W. H. | Albany | Chevrolet | A 135 | Municipality of Albany | 1926-27 |
| Rockcliffe | W. H. | Albany | Chevrolet | A 135 | Albany Municipality | 1927-28 |
| Rocke | Antonia | Spearwood Vineyard | Ford | 1649 | Metro Private Car | 1923-24 |
| Rocke | H. J. | Belmont Avenue, Belmont | Ford | 5434 | Metro Private Car | 1925-26 |
| Rocke | J. T. | 122 Aberdeen Street, Perth | Australian | 3293 | Metro Private Car | 1924-25 |
| Rocke | J. T. | 122 Aberdeen Street, Perth | Reo | 3293 | Metro Hire or Trade | 1925-26 |
| Rocke | J. T. | 122 Aberdeen Street, Perth | Reo | 3293 | Metro Hire or Trade | 1926-27 |
| Rocke | Jno. T. | 122 Aberdeen Street, Perth | Australian | 3293 | Metropolitan Hire and Trade Cars | 1923-24 |
| Rocke | John T. | 122 Aberdeen Street, Perth | Australian "6" | 3293 | Metro Vehicle for Hire | 1922-23 |
| Rocke | Mrs E. M. | Spearwood | Hupmobile | 9278 | Metro Private Car | 1926-27 |
| Rocke | Mrs E. M. | 124 Ord Street, Fremantle | Hupmobile | 9278 | Metro Private Car | 1927-28 |