| Harrison | Sydney | Herne Hill | Chevrolet Truck | SW ● 112 | Swan Road Board | 1927-28 |
| Harrison | T. | Mingenew | Chevrolet | MI ● 36 | Mingenew Road Board | 1925-26 |
| Harrison | T. | Mingenew | Chevrolet | MI ● 36 | Mingenew Road Board | 1926-27 |
| Harrison | T. | Mingenew | Chevrolet | MI ● 36 | Mingenew Road Board | 1927-28 |
| Harrison | T. | Denmark | Chevrolet Truck | DE ● 59 | Denmark Road Board | 1927-28 |
| Harrison | T. H. | Doodlakine | Rugby | KE ● 147 | Kellerberrin Road Board | 1925-26 |
| Harrison | T. H. | Doodlakine | Rugby | KE ● 147 | Kellerberrin Road Board | 1926-27 |
| Harrison | T. H. | Doodlakine | Rugby | KE ● 147 | Kellerberrin Road Board | 1927-28 |
| Harrison | T. P. | Greenough | Chevrolet | GH ● 22 | Greenough Road Board | 1924-25 |
| Harrison | T. T. | Greenough | Chevrolet | GH ● 41 | Greenough Road Board | 1925-26 |
| Harrison | T. T. | Greenough | Chevrolet | GH ● 41 | Greenough Road Board | 1926-27 |
| Harrison | T. T. | Utacarra, Geraldton | Chevrolet | GN 71 | Geraldton Municipality | 1927-28 |
| Harrison | T. T. | Greenough | Chevrolet | GH ● 41 | Greenough Road Board | 1927-28 |
| Harrison | Thomas. T. | Greenough | Chevrolet | GH ● 22 | Greenough Road Board | 1923-24 |
| Harrison | W. | Dumbleyung | Overland | DU ● 46 | Dumbleyung Road Board | 1925-26 |
| Harrison | W. | 306 Hampton Road, Fremantle | Chevrolet | 12272 | Metro Private Car | 1926-27 |
| Harrison | W. | Dumbleyung | Overland | DU ● 46 | Dumbleyung Road Board | 1926-27 |
| Harrison | W. | Geraldton | Chevrolet | GN 26 | Geraldton Municipality | 1926-27 |
| Harrison | W. | 306 Hempton Road, Fremantle | Chevrolet | 12272 | Metro Private Car | 1927-28 |
| Harrison | W. | Kellerberrin | Chevrolet | KE ● 104 | Kellerberrin Road Board | 1927-28 |
| Harrison | W. | Dumbleyung | Overland | DU ● 46 | Dumbleyung Road Board | 1927-28 |
| Harrison | W. E. | Hardy Street, Hollywood | Morris-Cowley | 13846 | Metro Private Car | 1926-27 |
| Harrison | W. E. | 323 Onslo Road, West Subiaco | Morris Cowley | 13846 | Metro Private Car | 1927-28 |
| Harrison | W. H. | 12 Rockton Road, Claremont | Chevrolet | 11404 | Metro Private Car | 1927-28 |
| Harrison | W. S. | Denmark | Dodge | DE ● 43 | Denmark Road Board | 1927-28 |
| Harrison | Wm. Ed | 256 Perth Street, Subiaco | Indian | 1097 | Metro Motorcycle | 1922-23 |
| Harrison & Blechynden | W. & A. | Mount Kokeby | Chevrolet 20 H.P. | BE ● 62 | Beverley Road Board | 1917-18 |
| Harrison & Blechyndne | W. & A. | Mount Kokeby | Chevrolet 20 H.P. | BE ● 52 | Beverley Road Board | 1919 |
| Harrison & Co | - | Broomehill | Chevrolet Truck | BH ● 105 | Broomehill Road Board | 1927-28 |
| Harrison & Co | H. C. | Broomehill | Pontiac | BH ● 119 | Broomehill Road Board | 1927-28 |
| Harrison & Sons | - | Benjaberring | - | WM ● 256 | Wyalkatchem Road Board | 1926-27 |
| Harrison & Sons | - | Benjaberring | Austin | WM ● 338 | Wyalkatchem Road Board | 1927-28 |
| Harrison Bros | - | Benjaberring | Ford | WM ● 169 | Wyalkatchem Road Board | 1925-26 |
| Harrison Bros | - | Benjaberring | Ford | WM ● 169 | Wyalkatchem Road Board | 1927-28 |
| Harrison Ramsay Ltd | - | AMP Chambers, Perth | Morris-Cowley | 9350 | Metro Private Car | 1926-27 |
| Harrison Ramsay Ltd | - | A.M.P. Chambers, Perth | Morris-Cowley | 9350 | Metro Private Car | 1927-28 |
| Harrison Ramsay Prop Ltd | - | A.M.P. Buildings | Dodge | 4322 | Metro Private Car | 1926-27 |
| Harrison Ramsay Prop. Ltd | - | A.M.P. Buildings, Perth | Ford | 4322 | Metro Private Car | 1923-24 |
| Harrison Ramsay Prop. Ltd | - | A.M.P. Bldges Perth | Ford | 4322 | Metro Private Car | 1924-25 |
| Harrison Ramsay Prop. Ltd | - | A.M.P. Buildings, Perth | Ford | 4322 | Metro Private Car | 1925-26 |
| Harrison Ramsay Prop. Ltd | - | A.M.P. Buildings | Dodge | 4322 | Metro Private Car | 1927-28 |
| Harrison San Mignel Ltd | - | Howard Place, Perth | Ford | 787 | Metro Private Car | 1923-24 |
| Harrison San Miguel Ltd | - | Howard Place, Perth | Renault | 2412 | Metro Private Car | 1923-24 |
| Harrisson | C. E. | Victoria Avenue, Claremont | Car | C ● 90 | Claremont Municipality | 1917-18 |
| Harrod | E. | 3 Bateman Street, Fremantle | Chevrolet | 11656 | Metro Private Car | 1926-27 |
| Harrod | E. | 3 Bateman Street, Fremantle | Chevrolet | 11656 | Metro Private Car | 1927-28 |
| Harrold | Eileen | Park Road, Gooseberry Hill | Hudson | 992 | Metro Private Car | 1926-27 |
| Harrold | I. | - | Chevrolet Truck | NGN 102 | Narrogin Municipality | 1926-27 |
| Harrold | I. | Narrogin | Chevrolet Truck | NGN 102 | Narrogin Municipality | 1927-28 |
| Harrold | Ivo | Narrogin | Chevrolet Truck | NO ● 78 | Narrogin Road Board | 1926-27 |
