| Noville | J. L. | Yalgoo | Ford | YA ● 10 | Yalgoo Road Board | 1926-27 |
| Novrie | A. | Wagin | Morris-Cowley | WN ● 13 | Wagin Municipality | 1926-27 |
| Novrie | A. | Wagin | Morris-Cowley | WN 13 | Wagin Municipality | 1927-28 |
| Nowlands | L. R | Wiluna | Dodge | WU ● 12 | Wiluna Road Board | 1926-27 |
| Nowlands | L. R. | Wiluna | Dodge | WU ● 12 | Wiluna Road Board | 1927-28 |
| Nowotny | Adele | 18 Woodville Street, North Perth | Rugby | 7851 | Metro Private Car | 1925-26 |
| Nowotny | Adele | 18 Woodville Street, North Perth | Rugby | 7851 | Metro Private Car | 1926-27 |
| Nowotny | Adele | 15 Woodville Street, North Perth | Rugby | 7851 | Metro Private Car | 1927-28 |
| Noye | T | Kellerberrin | Ford Truck | KE ● 346 | Kellerberrin Road Board | 1927-28 |
| Nu Tred Tyres (W.A. ) Ltd | - | 376 Murray Street, Perth | Ford | 8840 | Metro Private Car | 1926-27 |
| Nugent | R. L. | Nungarin | Ford Truck | NA ● 147 | Nungarin Road Board | 1927-28 |
| Nugent | T. | Kanowna | Ford 20 H.P. | KAN 1 | Kanowna Municipality | 1917-18 |
| Nugent | T. | Kanowna | Ford 20 H.P. | KAN 1 | Kanowna Road Board | 1919 |
| Nullagine Mining Co | - | Nullagine | Ford 20 H.P. | NU 2 | Nullagine Road Board | 1919 |
| Nullagine Road Board | - | Nullagine | Ford Truck | NU ● 7 | Nullagine Road Board | 1925-26 |
| Nullagine Road Board | - | Nullagine | Ford Truck | NU ● 7 | Nullagine Road Board | 1927-28 |
| Nullagine Road Board. | - | Nullagine | Ford Truck | NU ● 7 | Nullagine Road Board | 1926-27 |
| Nulsen | Emil | Norseman | Dodge | NM ● 3 | Norseman Road Board | 1925-26 |
| Nulsen | Emil | Norseman | Dodge | NM ● 3 | Norseman Road Board | 1926-27 |
| Nulsen | Emil | Norseman | Overland Truck | NM ● 6 | Norseman Road Board | 1926-27 |
| Nulsen | Emil | Norseman | Dodge | NM ● 3 | Norseman Road Board | 1927-28 |
| Nulsen | Emil. | Norseman | Overland Truck | NM ● 6 | Norseman Road Board | 1925-26 |
| Nulson | T. | Wickepin | Buick | WK ● 109 | Wickepin Road Board | 1925-26 |
| Nulson | T. | Wickepin | Buick | WK ● 109 | Wickepin Road Board | 1926-27 |
| Nulson | T. | Wickepin | Buick | WK ● 109 | Wickepin Road Board | 1927-28 |
| Nulson | Tom | Wickerpin | Ford | WK ● 48 | Wickepin Road Board | 1923-24 |
| Nulson | Tom | Wickepin | Ford | WK ● 48 | Wickepin Road Board | 1924-25 |
| Nunan | - | Katanning | Dodge | KA ● 192 | Katanning Road Board | 1926-27 |
| Nunan | E. R. | Badgebup | Ford | KA ● 191 | Katanning Road Board | 1925-26 |
| Nunan | E. R. | Badgebup | Ford | KA ● 191 | Katanning Road Board | 1926-27 |
| Nunan | E. R. | Katanning | Ford | KA ● 191 | Katanning Road Board | 1927-28 |
| Nunan | H. T. | Kellerberrin | Chevrolet | KE ● 114 | Kellerberrin Road Board | 1925-26 |
| Nunan | H. T. | Kellerberrin | Chevrolet | KE ● 114 | Kellerberrin Road Board | 1926-27 |
| Nunan | H. T. | Kellerberrin | Chevrolet | KE ● 114 | Kellerberrin Road Board | 1927-28 |
| Nunan & Sons | J. | Katanning | Dodge | KA ● 192 | Katanning Road Board | 1925-26 |
| Nungarin Co-op | - | Nungarin | Ford Truck | NA ● 3 | Nungarin Road Board | 1924-25 |
| Nungarin Co-op | - | Nungarin | Chevrolet | NA ● 2 | Nungarin Road Board | 1925-26 |
| Nungarin Co-op | - | Nungarin | Ford Truck | NA ● 3 | Nungarin Road Board | 1927-28 |
| Nungarin Co-op | _ | Nungarin | Ford Truck | NA ● 3 | Nungarin Road Board | 1925-26 |
| Nungarin Co-op. | - | Nungarin | Ford | NA ● 2 | Nullagine Road Board | 1922-23 |
| Nungarin Co-op. | - | Nungarin | Ford | NA ● 2 | Nungarin Road Board | 1924-25 |
| Nungarin Coop. Co | - | Nungarin | Ford | NA ● 2 | Nungarin Road Board | 1923-24 |
| Nungarin Farmers Group | - | Nungarin | Ford Lorry | NA ● 35 | Nungarin Road Board | 1924-25 |
| Nungarin Road Board | - | Nungarin | Ford | NA ● 45 | Nungarin Road Board | 1924-25 |
| Nungarin Road Board | - | - | Chevrolet | NA ● 2 | Nungarin Road Board | 1927-28 |
| Nungarin Road Board | - | Nungarin | Chevrolet Truck | NA ● 149 | Nungarin Road Board | 1927-28 |
| Nungarin Road Board. | - | Nungarin | Ford | NA ● 45 | Nungarin Road Board | 1925-26 |
| Nunn | C. F. | Cr.Harrow & Kennedy streets, Maylands | Chevrolet | 843 | Metro Private Car | 1927-28 |
| Nunn | F. W. | Bunbury | Dodge | BY 187 | Bunbury Municipality | 1927-28 |
| Nunn | G. A. | Melville Street | - | C 37 | Claremont Municipality | 1915 |
