| The Bairds | - | Wellington Street, Perth | Oakland | 1421 | Metro Private Car | 1923-24 |
| The Bairds | - | Wellington Street, Perth | Studebaker | 1422 | Metro Private Car | 1923-24 |
| The Bairds | - | Wellington Street, Perth | Talbot Wagon | 1420 | Metro Private Car | 1924-25 |
| The Bairds | - | Wellington Street, Perth | Oakland | 1421 | Metro Private Car | 1924-25 |
| The Bairds | - | Wellington Street, Perth | Studebaker Wagon | 1422 | Metro Private Car | 1924-25 |
| The Bairds Co | - | Hay Street | Overland 30 H.P. | P 324 | Perth Municipality | 1915 |
| The Bairds Co | - | Wellington Street, Perth | Overland | 1423 | Metro Private Car | 1923-24 |
| The Bairds Co | - | Wellington Street, Perth | Dodge | 1424 | Metro Private Car | 1923-24 |
| The Bairds Co | - | Wellington Street, Perth | Dodge | 1425 | Metro Private Car | 1923-24 |
| The Bairds Co | - | Wellington Street, Perth | Talbot | 1426 | Metro Private Car | 1923-24 |
| The Bairds Co | - | Wellington Street, Perth | Ford Wagon | 4396 | Metro Private Car | 1923-24 |
| The Bairds Co Ltd | | Wellington Street, Perth | Ford Wagon | 1426 | Metro Private Car | 1924-25 |
| The Bairds Co Ltd | - | Hay Street | Dodge 20 H.P. | P 169 | Perth Municipality | 1919 |
| The Bairds Co Ltd | - | Hay Street | Dodge 20 H.P. | P 324 | Perth Municipality | 1919 |
| The Batger Co | - | 70 King Street | Premier 3½ H.P. Motorcycle | P 798 | Perth Municipality | 1916 |
| The Bunyip Soap Co | - | Cliff Street, Fremantle | Dodge | 950 | Metro Private Car | 1927-28 |
| The Call Painting Co | - | 257 Murray Street, Perth | Willys-Knight | 9840 | Metro Private Car | 1926-27 |
| The Call Printing Co | - | 257 Murray Street, Perth | Willys-Knight | 9840 | Metro Private Car | 1927-28 |
| The De Gray River Pas. Co | - | Saint George's House | Buick | 4800 | Metro Private Car | 1924-25 |
| The De Grey River Pas. Co | - | Saint George's House | Buick | 4800 | Metro Private Car | 1923-24 |
| The De Grey River Pastoral Co | - | Saint George's House | Buick | 4800 | Metro Private Car | 1925-26 |
| The Distillers Co Ltd | - | Bazaar Terrace, Perth | Chrysler | 11425 | Metro Private Car | 1926-27 |
| The Distillers Co Ltd | - | Bazaar Terrace, Perth | Chrysler | 11425 | Metro Private Car | 1927-28 |
| The Federal Trading and Eng. Co Ltd | - | - | Indian 5 H.P. | P 1263 | Perth Municipality | 1919 |
| The Glyde Sisters | - | 73 Esplanade, South Perth | Buick | 314 | Metro Private Car | 1923-24 |
| The Insurance Co of A'lia. Ltd | - | 55 Saint George's Terrace | Ford | 1172 | Metro Private Car | 1924-25 |
| The Insurance Co of Australia Ltd | - | 55 Saint George's Terrace | Ford | 1172 | Metro Private Car | 1925-26 |
| The Insurance Co of Australian Ltd | - | 55 Saint Geoge's Terrace | Ford | 1172 | Metro Private Car | 1923-24 |
| The Lakes Station Ltd | - | Saint George's House, Perth | Ford | 4912 | Metro Private Car | 1923-24 |
| The Manager | - | De Grey via Port Hedland | Motor car | PHRB 3 | Port Hedland Road Board | 1915 |
| The Misses Glyde (3) | - | 207 Adelaide Terrace | Buick 20 H.P. | P 314 | Perth Municipality | 1919 |
| The Park Estate Agency | - | 426 Albany Road, Victoria Park | International Wagon | 11978 | Metro Private Car | 1927-28 |
| The Pastoral Shearing Co | - | Carnarvon | Ford 15 horespower | GM 4 | Gascoyne - Minilya Road Board | 1916 |
| The Union Brewery | - | Palmerston Street | Dennis Lorry 20 H.P. | P 757 | Perth Municipality | 1919 |
| The Victoria Insurance Co Ltd | - | Saint George's Terrace | Ford 20 H.P. | P 546 | Perth Municipality | 1919 |
| The Western Ironworks | - | 210 High Street, Fremantle | Talbot Wagon | 3257 | Metropolitan Hire and Trade Cars | 1923-24 |
| The Western Wool Scour. Co | - | Phillamore Street, Fr. | Chevrolet Wagon | 6075 | Metro Private Car | 1924-25 |
| The Western Wool Scouring Co | - | Phillamore Street, Fremantle | Chevrolet Wagon | 6075 | Metro Private Car | 1925-26 |
| The Westralian Farmers Ltd | - | 332 Murray Street | Ford 20 H.P. | P 4 | Perth Municipality | 1916 |
| Theaker | J. S. | Busselton | Ford | BN 74 | Municipality of Busselton | 1926-27 |
| Theaker | J. S. | Busselton | Ford | BN 74 | Municipality of Busselton | 1927-28 |
| Theakston | Mrs L | 18 Hubble Street, East Fremantle | Dodge | 1989 | Metro Private Car | 1924-25 |
| Theakston | Mrs L. | 18 Hubble Street, East Fremantle | Dodge | 1989 | Metro Private Car | 1923-24 |
| Theakston | Mrs L. | 18 Hubble Street, East Fremantle | Dodge | 1989 | Metro Private Car | 1925-26 |
| Theakston | Mrs L. | 18 Hubbie Street, East Fremantle | Oldsmobile | 9647 | Metro Private Car | 1926-27 |
| Theil | P. W. H. | Nembudding | Ford Truck | WM ● 300 | Wyalkatchem Road Board | 1927-28 |
| Thelemann | F. | Port Hedland | Republic Truck | PH ● 14 | Port Hedland Road Board | 1925-26 |
| Thelemann | F. | Port Hedland | Republic Truck | PH ● 14 | Port Hedland Road Board | 1927-28 |
| Therley | H. J. | Bridgetown | Renault | B ● 126 | Bridgetown Road Board | 1925-26 |
| Theroux | A. J. | Cnr. Hay & Pier Street, Perth | Chevrolet | 11404 | Metro Private Car | 1926-27 |