| Nelson Redfern & Derby Streets | E. E. | Subiaco | Dodge | 821 | Metro Private Car | 1925-26 |
| Nenke | J. C. H. | Steere Street, Collie | Buick | CM 14 | Collie Municipality | 1923-24 |
| Nenke | J. C. H. | Steere Street, Collie | Buick | CM 14 | Collie Municipality | 1924-25 |
| Nenke | J. C. H. | Forrest Street, Collie | Fiat | CM 14 | Collie Municipality | 1926-27 |
| Nenner | C. W. | 100 Dugan Street | Turner 9 H.P. | KMC 48 | Kalgoorlie Municipality | 1916 |
| Neptune Oil & Co | - | North Fremantle | Ford | 1955 | Metro Private Car | 1925-26 |
| Neptune Oil Co | - | Napier Road | 2½ H.P. Motorcycle & Sidecar | NF 10 | North Fremantle Municipality | 1915 |
| Neptune Oil Co | - | North Fremantle | Ford | 1955 | Metro Private Car | 1923-24 |
| Neptune Oil Co | - | Napier Road, North Fremantle | Ford | 4014 | Metro Private Car | 1923-24 |
| Neptune Oil Co | - | North Fremantle | Ford | 1955 | Metro Private Car | 1924-25 |
| Neptune Oil Co | - | Napier Street, Fremantle | Ford | 6042 | Metro Private Car | 1924-25 |
| Neptune Oil Co | - | Fremantle | Hudson | 6429 | Metro Private Car | 1924-25 |
| Neptune Oil Co | - | Napier Street, North Fremantle | Ford | 6042 | Metro Private Car | 1925-26 |
| Neptune Oil Co | - | Fremantle | Hudson | 6429 | Metro Private Car | 1925-26 |
| Neptune Oil Co | - | Napier Road, North Fremantle | Ford | 4014 | Metro Private Car | 1925-26 |
| Neptune Oil Co | - | Napier Street, North Fremantle | Karrier | 12230 | Metro Private Car | 1926-27 |
| Neptune Oil Co | - | Napier Street, North Fremantle | Essex | 12250 | Metro Private Car | 1926-27 |
| Neptune Oil Co | - | Napier Street, North Fremantle | Ford | 6042 | Metro Private Car | 1926-27 |
| Neptune Oil Co | - | Napier Street, North Fremantle | Karrier | 12230 | Metro Private Car | 1927-28 |
| Neptune Oil Co | - | Napier Street, North Fremantle | Essex | 12250 | Metro Private Car | 1927-28 |
| Neptune Oil Co | N. O. | North Fremantle | Ford | 1955 | Metro Private Car | 1926-27 |
| Neptune Oil Company | - | Napier Street, North Fremantle | Ford | 4014 | Metro Private Car | 1924-25 |
| Nepturne Oil Co | - | Katanning | - | KA ● 344 | Katanning Road Board | 1927-28 |
| Nerbon | H. V. | 42 Coolgardie Street, Subiaco | Overland | 5533 | Metro Private Car | 1925-26 |
| Nes | J. W. | Narembeen | Chevrolet | BK 84 | Bruce Rock Road Board | 1923 - 1924 |
| Nesbit | F. | Collie | Chevrolet | CM 188 | Collie Municipality | 1927-28 |
| Nesbit | J. W. | Westonia | Ford Truck | WT ● 31 | Westonia Road Board | 1927-28 |
| Ness | L. V. | 40 Cambridge Street, West Leederville | Ford | 8373 | Metro Private Car | 1925-26 |
| Ness | R. E. | Bokal | Chrysler | AW ● 89 | West Arthur Road Board | 1927-28 |
| Ness | S. | Farmer Street, North Perth | Essex | 797 | Metro Private Car | 1922-23 |
| Ness | S. | Hotel Metropole Hay Street, Perth | Essex | 5977 | Metro Private Car | 1924-25 |
| Ness | S. | Hotel Metropol Hay Street, Perth | Essex | 5977 | Metro Private Car | 1925-26 |
| Ness | S. | Hotel Metropole Hay Street, Perth | Essex | 5977 | Metro Private Car | 1926-27 |
| Ness | S. | 40 Cambridge Street, West Leederville | Chrysler | 11116 | Metro Private Car | 1927-28 |
| Ness | S. T. | 40 Cambridge Street, West Leederville | Buick | 7585 | Metro Private Car | 1925-26 |
| Ness | S. T. | 40 Cambridge Street, West Leederville | Buick | 7585 | Metro Private Car | 1926-27 |
| Ness | S. T. | 40 Cambridge Street, West Leederville | Buick | 7585 | Metro Private Car | 1927-28 |
| Ness | Stanley | Hotel Metropole, Perth | Essex | 797 | Metro Private Car | 1923-24 |
| Ness | W. J. | Katanning | Overland 30 H.P. | KA 54 | Katanning Road Board | 1916 |
| Ness | W. J. | - | Essex | NGN 121 | Narrogin Municipality | 1926-27 |
| Ness | W. J. | Narrogin | Essex | NGN 121 | Narrogin Municipality | 1927-28 |
| Nessettler's League | - | Saint George's Terrace, Perth | Rugby | 2383 | Metro Private Car | 1927-28 |
| Nestle & Anglo - Swiss Condensed Milk C. | - | Phillimore Street, Fremantle | Napier 16 - 20 H.P. | EF78 | Fremantle (East) Municipality | 1916 |
| Nestle & Anglo-Swiss Condensed Milk Co | - | Phillimore Street, Fremantle | Napier 16-20 H.P. | EF 78 | East Fremantle Municipality | 1915 |
| Nestle Swiss Milk Co | - | 609 Wellington Street | Overland 20 H.P. | P 853 | Perth Municipality | 1917-18 |
| Nestle Swiss Milk Co | - | 609 Wellington Street | Overland 20 H.P. | P 853 | Perth Municipality | 1919 |
| Nestle's Milk Coy. | - | Dalgety Street | Napier 16-20 H.P. | EF 78 | East Fremantle Municipality | 1919 |
| Nestle's Milk Coy. (W. Lohoar) | - | Dalgety Street | Napier 16-20 H.P. | EF 78 | East Fremantle Municipality | 1917-18 |
| Nestles Milk Co | - | Wellington Street, Perth | Buick | 745 | Metro Private Car | 1922-23 |
| Nestles Milk Co | - | Wellington Street, Perth | Ford | 746 | Metro Private Car | 1922-23 |