| Gilmore & Son | F. | Scaddan | Ford | EO ● 4 | Esperance Road Board | 1925-26 |
| Gilmore & Son | F. | Scaddan | Ford | EO ● 4 | Esperance Road Board | 1926-27 |
| Gilmour | E. | Bunbury | Precision 3¾ Motorcycle | By 4 | Bunbury Municipality | 1917-18 |
| Gilmour | E. | Bunbury | Rover 2½ Motorcycle | By 8 | Bunbury Municipality | 1917-18 |
| Gilmour | R. | Pinjarra | Austin | MY ● 69 | Murray Road Board | 1924-25 |
| Gilmour | R. | Pinjarra | Austin | MY ● 69 | Murray Road Board | 1925-26 |
| Gilmour | R. B. | Bunbury | Talbot 12 H.P. | By 1 | Bunbury Municipality | 1915 |
| Gilmour | R. B. | Bunbury | Talbot 12 H.P. | By 1 | Bunbury Municipality | 1916 |
| Gilmour | R. B. | Bunbury | Talbot 15 H.P. | By 29 | Bunbury Municipality | 1919 |
| Gilmour | R. B. | Bunbury | Daimler | BY 51 | Bunbury Municipality | 1923 - 1924 |
| Gilmour | R. B. | Bunbury | Daimler | By 51 | Bunbury Municipality | 1924-25 |
| Gilmour | R. B. | Bunbury | Daimler | BY 51 | Bunbury Municipality | 1925-26 |
| Gilmour | R. B. | Bunbury | Oldsmobile | BY 51 | Bunbury Municipality | 1926-27 |
| Gilmour | R. B. | Bunbury | Morris-Oxford | BY 115 | Bunbury Municipality | 1927-28 |
| Gilmour | R. E. | Pinjarra | Ford | MY ● 19 | Murray Road Board | 1926-27 |
| Gilmour | R. E. | Pinjarra | Ford | MY ● 145 | Murray Road Board | 1926-27 |
| Gilmour | R. E. | Dealers Number Plate | - | MY ● 170 | Murray Road Board | 1926-27 |
| Gilmour | R. E. | Pinjarra | Ford | MY ● 267 | Murray Road Board | 1927-28 |
| Gilmour | R. E. | Pinjarra | Ford | MY ● 170 | Murray Road Board | 1927-28 |
| Gilmour | W. A. | 62 Victoria Avenue, Claremont | Morris Cowley | 14880 | Metro Private Car | 1927-28 |
| Gilroy | Rev T. | Albany | Dodge | A 26 | Albany Municipality | 1927-28 |
| Gilroy | Rev. Father T. | Albany | Dodge | A 26 | Albany Municipality | 1923-24 |
| Gilroy | Rev. T. | Albany | Nash | A 26 | Municipality of Albany | 1924-25 |
| Gilroy | Rev. T. | Albany | Dodge | A 26 | Municipality of Albany | 1925-26 |
| Gilroy | Rev. T. | Albany | Dodge | A 26 | Municipality of Albany | 1926-27 |
| Gilsham | S. | Gabinintha | Ford | MK ● 33 | Meekatharra Road Board | 1924-25 |
| Gilson | F. | Nalkain | Overland | WM ● 19 | Wyalkatchem Road Board | 1923-24 |
| Gilson | F. | Nalkain | Overland | WM ● 19 | Wyalkatchem Road Board | 1924-25 |
| Gilson | F. G. | Nalkain | Overland | WM ● 19 | Wyalkatchem Road Board | 1925-26 |
| Giltrow | C. | - | Ford | CU ● 128 | Upper Chapman Road Board | 1926-27 |
| Giltrow | C. | - | Ford | CU ● 128 | Upper Chapman Road Board | 1927-28 |
| Gilwhite | J. | 62 Railway Parade, West Perth | Willys-Knight | 8790 | Metro Private Car | 1925-26 |
| Gilwhite | J. | 62 Railway Parade, West Perth | Overland | 1045 | Metro Private Car | 1925-26 |
| Gilwhite | J. | 62 Railway Parade, West Perth | Willys-Knight | 8790 | Metro Private Car | 1926-27 |
| Gilwhite | J. | 62 Railway Parade, West Perth | Willys-Knight | 8790 | Metro Private Car | 1927-28 |
| Gindong | J. | 14 Dyer Street | B.S.A. 3½ H.P. Motorcycle | P 727 | Perth Municipality | 1919 |
| Ginsberg | M. | 237 Murray Street | Triumph 2¼ H.P. Motorcycle | P 844 | Perth Municipality | 1919 |
| Gippsland & Northern Co | - | Saint George's Terrace, Perth | Seneca | 13373 | Metro Private Car | 1926-27 |
| Gipsland & Northern Ins. | - | Wyalkatchem | Dodge | WM ● 363 | Wyalkatchem Road Board | 1927-28 |
| Gipson | W. G. | 107 Terrace Road, Guildford | Scripps-Booth | 2440 | Metro Private Car | 1924-25 |
| Gipson | W. G. | 107 Terrace, Road, Guildford | Scripps-Booth | 2440 | Metro Private Car | 1925-26 |
| Gipson | W. G. | 107 Terrace, Road, Guildford | Overland | 12013 | Metro Private Car | 1926-27 |
| Gipson | W. G. | Terrace Road, Guildford | Dodge | 11135 | Metro Private Car | 1926-27 |
| Gipson | W. G. | 107 Terrace, Road, Guildford | Citroen | 13142 | Metro Private Car | 1927-28 |
| Gipson | W. G. | 107 Terrace, Road, Guildford | Overland | 12013 | Metro Private Car | 1927-28 |
| Gipson | W. J. | 107 Terrace, Road, Guildford | Citroen | 13142 | Metro Private Car | 1926-27 |
| Giralia & Co | - | Onslow | Chevrolet Truck | AS ● 15 | Ashburton Road Board | 1927-28 |
| Giralia Pastoral Co | - | Giralia Station | Ford | AS ● 56 | Ashburton Road Board | 1926-27 |
| Giralia Pastoral Co | - | Towera Station | Ford | AS ● 56 | Ashburton Road Board | 1927-28 |
| Giralia Prateral Co | - | Giralia Station | Ford | AS ● 56 | Ashburton Road Board | 1925-26 |
