| Gray | R. F. | Karragullen | Ford Truck | DR ● 75 | Darling Range Road Board | 1925-26 |
| Gray | R. F. | Karragullen | Chevrolet | DR ● 75 | Darling Range Road Board | 1926-27 |
| Gray | R. F. | Karragullen | Chevrolet Truck | DR ● 75 | Darling Range Road Board | 1927-28 |
| Gray | R. L. | 359 Murray Street, Perth | Federal | 10057 | Metro Hire or Trade | 1926-27 |
| Gray | Roy | - | Grant 10 H.P. | DR ● 4 | Darling Range Road Board | 1922-23 |
| Gray | Sam | Manjimup | Reo Truck | WA ● 151 | Manjimup Road Board | 1926-27 |
| Gray | Sam | Manjimup | Reo Truck | WA ● 151 | Manjimup Road Board | 1927-28 |
| Gray | W. | Royal Hotel, Perth | Dodge | 13861 | Metro Private Car | 1927-28 |
| Gray | W. E. | 272 Oxford Street, Leederville | Ford Wagon | 10449 | Metro Hire or Trade | 1926-27 |
| Gray | W. L. | - | Studebaker | CU ● 158 | Upper Chapman Road Board | 1926-27 |
| Gray | W. L. | - | Studebaker | CU ● 158 | Upper Chapman Road Board | 1927-28 |
| Gray | W. M. | 67 Outram Street, West Perth | Ford 20 H.P. | P 242 | Perth Municipality | 1919 |
| Gray | W. M. | 67 Outram Street, West Perth | Ford | 233 | Metro Private Car | 1923-24 |
| Gray | W. M. | 67 Outram Street, West Perth | Maxwell | 5683 | Metro Private Car | 1924-25 |
| Gray | W. M. | 113 Grant Street, Cottesloe | Maxwell | 7230 | Metro Private Car | 1925-26 |
| Gray | W. M. | 113 Grant Street, Cottesloe | Maxwell | 7230 | Metro Private Car | 1926-27 |
| Gray | W. M. | 113 Grant Street, Cottesloe | Maxwell | 7230 | Metro Private Car | 1927-28 |
| Gray | Wm. M. | 67 Outram Street, Perth | Ford | 233 | Metro Private Car | 1922-23 |
| Gray & Co | W. | 975 Hay Street, Perth | Ford Wagon | 5401 | Metro Private Car | 1924-25 |
| Gray & Co | W. | 975 Hay Street, Perth | Ford Wagon | 5401 | Metro Private Car | 1925-26 |
| Grayson | C. | 307 Hay Street, Perth | Rugby | 6841 | Metro Private Car | 1925-26 |
| Grayson | C. | 307 Hay Street, Subiaco | Chevrolet | 4344 | Metro Private Car | 1926-27 |
| Grayson | C. | 307 Hay Street, Perth | Rugby | 6841 | Metro Private Car | 1926-27 |
| Grayson | C. | 307 Hay Street, Perth | Rugby | 6841 | Metro Private Car | 1927-28 |
| Grayson | Charles. | 141 Railway Road, Subiaco | Indian Scout | 1135 | Metro Motorcycle | 1922-23 |
| Graziers' Co-operativve Co | - | Pingelly | Ford 20 H.P. | PN ● 35 | Pingelly Road Board | 1922-23 |
| Gream | T. | Geraldton | Buick | G ● 25 | Geraldton Road Board | 1927-28 |
| Great Boulder Mine | - | Fimiston | Triumph 5 H.P. Motorcycle | K ● 8 | Kalgoorlie Road Board | 1922-23 |
| Great Boulder Perserverance G.M. | - | Fimiston | Ford 20 H.P. | K ● 2 | Kalgoorlie Road Board | 1923-24 |
| Great Boulder Perseverance | G. M. | Fimiston | Ford 20 H.P. | K ● 2 | Kalgoorlie Road Board | 1922-23 |
| Great Southern Motor Garage | | Wagin | Buick | WM 25 | Wagin Municipality | 1922-23 |
| Great Southern Motor Garage | - | Wagin | Dodge | WM 6 | Wagin Municipality | 1922-23 |
| Great Southern Motor Garage | - | Wagin | Motor Wagon | WM 31 | Wagin Municipality | 1922-23 |
| Great Southern Motor Garage | - | Wagin | Buick | WM ● 25 | Wagin Municipality | 1923-24 |
| Great Southern Motor Works | - | Wagin | Ford Wagon | WM ● 31 | Wagin Municipality | 1923-24 |
| Great Southern Motors Agency | - | Narrogin | Chevrolet | NGN 141 | Narrogin Municipality | 1927-28 |
| Great Southern Motors Agency | - | Narrogin | Oldsmobile | NGN 142 | Narrogin Municipality | 1927-28 |
| Great Southern Roller Flour Mills | - | North Fremantle | Chrysler | 12938 | Metro Private Car | 1927-28 |
| Greater Perth Land & Investment | - | C/o M. Crawcour Perth | Overland | 8773 | Metro Private Car | 1925-26 |
| Greater Perth Real Estate Co | - | Howard Street, Perth | Chrysler | 2614 | Metro Private Car | 1927-28 |
| Greatorex | M. W. S. | Moodiarrup | Maxwell | AW ● 26 | West Arthur Road Board | 1926-27 |
| Greatorex | M. W. S. | Moodiarrup | Maxwell | AW ● 26 | West Arthur Road Board | 1927-28 |
| Greaves | E. | Wongan Hills | Buick | WB ● 71 | Wongan-Ballidu Road Board | 1926-27 |
| Greaves | W. H. | Koorda | Ford | WM ● 52 | Wyalkatchem Road Board | 1923-24 |
| Greaves | W. H. | Koorda | Ford | WM ● 52 | Wyalkatchem Road Board | 1924-25 |
| Greaves | W. H. | Koorda | Nash | WM ● 52 | Wyalkatchem Road Board | 1925-26 |
| Greaves | W. H. | Koorda | Ford | WM ● 52 | Wyalkatchem Road Board | 1926-27 |
| Greaves | W. H. | Koorda | Ford Truck | WM ● 293 | Wyalkatchem Road Board | 1927-28 |
| Greay | A. D. | - | Ford 20 H.P. | PY 19 | Pingelly Road Board | 1915 |
| Greay | A. D. | Pingelly | Ford 20 H.P. | PN 19 | Pingelly Road Board | 1916 |
