| Roy | J. | Bencubbin | Ford | MM ● 5 | Mount Marshall Road Board | 1926-27 |
| Roy | J. | 44 Royal Arcade Perth | Chevrolet | 4882 | Metro Private Car | 1927-28 |
| Roy | J. | Bencubbin | Ford | MM ● 5 | Mount Marshall Road Board | 1927-28 |
| Roy | J. P. | Bencubbin | Ford | MM 5 | Mount Marshall Road Board | 1924-25 |
| Roy | Jas. | Bencubbin | Ford | MM ● 5 | Mount Marshall Road Board | 1923-24 |
| Roy Hill Past Co | - | Roy Hill | Ford | NU ● 6 | Nullagine Road Board | 1924-25 |
| Roy Hill Pastoral Co | | Roy Hill Station | Buick | MK ● 17 | Meekatharra Road Board | 1924-25 |
| Roy Hill Pastoral Co | - | Roy Hill | Overland | NU ● 2 | Nullagine Road Board | 1922-23 |
| Roy Hill Pastoral Co | - | Meekatharra | Buick Six | MK ● 8 | Meekatharra Road Board | 1922-23 |
| Roy Hill Pastoral Co | - | via Meekatharra | Buick | MK ● 6 | Meekatharra Road Board | 1923-24 |
| Roy Hill Pastoral Co | - | Meekatharra | Buick Six | MK ● 8 | Meekatharra Road Board | 1923-24 |
| Roy Hill Pastoral Co | - | Roy Hill | Overland | NU ● 18 | Nullagine Road Board | 1924-25 |
| Roy Hill Pastoral Co | - | Roy Hill | Ford | NU ● 6 | Nullagine Road Board | 1925-26 |
| Roy Hill Pastoral Co | - | Roy Hill | Overland | NU ● 6 | Nullagine Road Board | 1926-27 |
| Royal | . | Goomalling | Cleveland | GO ● 144 | Goomalling Road Board | 1925-26 |
| Royal | H. C. | Forward Street, Goomalling | Ford 20 H.P. | G 2 | Goomalling Road Board | 1915 |
| Royal | I. H. | Forward Street | Ford 20 H.P. | GO 2 | Goomalling Road Board | 1916 |
| Royal | I. H. | Goomalling | Ford 18 H.P. | GO ● 2 | Goomalling Road Board | 1917-18 |
| Royal | I. H. | Goomalling | Ford 18 H.P. | GO ● 2 | Goomalling Road Board | 1919 |
| Royal | I. H. | Goomalling | Ford | GO ● 88 | Goomalling Road Board | 1924-25 |
| Royal | I. H. | Goomalling | Ford | GO ● 3 | Goomalling Road Board | 1925-26 |
| Royal | I. H. | Goomalling | Ford | GO ● 88 | Goomalling Road Board | 1925-26 |
| Royal | I. H. | Goomalling | Ford | GO ● 3 | Goomalling Road Board | 1926-27 |
| Royal | I. H. | - | Ford Truck | GO ● 77 | Goomalling Road Board | 1926-27 |
| Royal | I. H. | - | Ford | GO ● 103 | Goomalling Road Board | 1926-27 |
| Royal | I. H. | Goomalling | Cleveland | GO ● 144 | Goomalling Road Board | 1926-27 |
| Royal | I. H. | - | Cleveland | GO ● 158 | Goomalling Road Board | 1926-27 |
| Royal | I. H. | - | Ford Truck | GO ● 77 | Goomalling Road Board | 1927-28 |
| Royal | I. H. | Goomalling | Oemonstration | GO ● 88 | Goomalling Road Board | 1927-28 |
| Royal | I. H. | - | Cleveland | GO ● 158 | Goomalling Road Board | 1927-28 |
| Royal | I. H. | Goomalling | Buick | GO ● 246 | Goomalling Road Board | 1927-28 |
| Royal | I. H. | Goomalling | Buick | GO ● 252 | Goomalling Road Board | 1927-28 |
| Royal | I. H. C. | Goomalling | Ford 20 H.P. | GO ● 2 | Goomalling Road Board | 1922-23 |
| Royal | I. H. C. | Goomalling | Durant | GO ● 2 | Goomalling Road Board | 1923-24 |
| Royal | I. H. C. | Goomalling | Durant | GO ● 2 | Goomalling Road Board | 1924-25 |
| Royal As. Co | - | Saint George's House, Perth | Ford | 2319 | Metro Private Car | 1923-24 |
| Royal Assurance Co | - | St .George's House, Perth | Ford | 2319 | Metro Private Car | 1924-25 |
| Royal Automobile Club | - | 228 Adelaide Terrace, Perth | Chevrolet | 5822 | Metro Private Car | 1927-28 |
| Royal Automobile Club of W.A. | - | Barrack Street, Perth | Chevrolet | 7942 | Metro Private Car | 1925-26 |
| Royal Commision on Ag. Indus. | - | A.M.P. Buildings | Ford 20 H.P. | P 784 | Perth Municipality | 1917-18 |
| Royal Commision on Ag. Indus. | - | A.M.P. Buildings | Ford 20 H.P. | P 788 | Perth Municipality | 1917-18 |
| Royal Ex. Ass. | - | Howard Street, Perth | Triumph | 1096 | Metro Motorcycle | 1922-23 |
| Royal Exchange Ass Co | - | 20 Howard Street, Perth | Austin | 8027 | Metro Private Car | 1926-27 |
| Royal Exchange Ass. Co | | 20 Howard Street | Triumph 3½ H.P. Motorcycle | P 696 | Perth Municipality | 1917-18 |
| Royal Exchange Ass. Co | - | 20 Howard Street, Perth | Austin | 8027 | Metro Private Car | 1925-26 |
| Royal Exchange Ass. Co | - | 20 Howard Street, Perth | Dodge | 14931 | Metro Private Car | 1927-28 |
| Royal Exchange Ass. Co | - | 20 Howard Street, Perth | Austin | 8027 | Metro Private Car | 1927-28 |
| Royal Exchange Assurance Co | - | Howard Street | Buick 20 H.P. | P 69 | Perth Municipality | 1919 |
| Royal Exchange Assurance Co | - | 20 Howard Street | Ford 20 H.P. | P 1184 | Perth Municipality | 1919 |
| Royal Exchange Assurance Corporation | | 20 Howard Street, Perth | Triumph 3½ H.P. Motorcycle | P 696 | Perth Municipality | 1916 |
