| Universal Tea Co | - | 14 McNeil Chambers, Barrack st | Chevrolet | 566 | Metro Private Car | 1926-27 |
| Universal Transport Co | - | Bazaar Terrace, Perth | Sentinel wagon | 3106 | Metro Vehicle for Hire | 1922-23 |
| University | - | Perth | Ford | 2172 | Metro Private Car | 1924-25 |
| Unmack | C. | 7 Bedford Avenue, Subiaco | Chevrolet | 2838 | Metro Private Car | 1924-25 |
| Unmack | C. | 7 Bedford Avenue, Subiaco | Velo | 6700 | Metro Private Car | 1924-25 |
| Unmack | C. | 7 Bedford Avenue, Subiaco | Velie | 6700 | Metro Private Car | 1925-26 |
| Unmack | C. | 7 Bedford Avenue, Subiaco | Velie | 6700 | Metro Private Car | 1926-27 |
| Unmack | C. | Ventnor Avenue, West Perth | Velle | 6670 | Metro Private Car | 1927-28 |
| Unmack | Claude | 7 Bedford Avenue, Subiaco | Chevrolet | 2838 | Metro Private Car | 1923-24 |
| Unmack | F. | National Hotel, Fremantle | Dodge | 9759 | Metro Private Car | 1926-27 |
| Unmack | Frank | National Hotel, Fremantle | Dodge | 12319 | Metro Private Car | 1927-28 |
| Unmack | W. T. | 96 Coghlan Road, Subiaco | Rugby | 8872 | Metro Private Car | 1925-26 |
| Unmack | W. T. | 96 Coughlan Road, Subiaco | Rugby | 8872 | Metro Private Car | 1926-27 |
| Unreadable | - | - | - | 4859 | Metro Private Car | 1923-24 |
| Unreadable | - | - | - | 4860 | Metro Private Car | 1923-24 |
| Unreadable | - | - | - | 4861 | Metro Private Car | 1923-24 |
| Unreadable | - | - | - | 4862 | Metro Private Car | 1923-24 |
| Unreadable | - | - | - | 4863 | Metro Private Car | 1923-24 |
| Unreadable | - | - | - | 4864 | Metro Private Car | 1923-24 |
| Unsworth | J. E. | Northwood Street, Leederville | Ford 20 H.P. | P 44 | Perth Municipality | 1919 |
| Unverdorben | Miss O. | 382 Barker Road, Subiaco | Chevrolet | 6922 | Metro Private Car | 1927-28 |
| Upham | A. | Harvey | Overland | H ● 18 | Harvey Road Board | 1924-25 |
| Upham | A. | Harvey | Overland | H ● 18 | Harvey Road Board | 1925-26 |
| Upham | A. | Harvey | Overland | H ● 18 | Harvey Road Board | 1926-27 |
| Upham | A. | Harvey | Overland | H ● 18 | Harvey Road Board | 1927-28 |
| Upham | G. T. W. | 40 Galwey Street, Leederville | Indian & Sidecar | 94 | Metro Motorcycle | 1922-23 |
| Upham | stanley | Carnavon Street, Carlisle | G.N. Car | 5337 | Metro Private Car | 1927-28 |
| Upham & Clowes | - | Grosvenor Hotel, Perth | Dodge | 5336 | Metro Private Car | 1925-26 |
| Uphill | R. G. | Balingup | Overland | BN ● 30 | Balingup Road Board | 1924-25 |
| Uphill | R. G. | Greenbushes | Overland | BN ● 30 | Balingup Road Board | 1925-26 |
| Uphill | R. G. | Greenbushes | Overland | BN ● 30 | Balingup Road Board | 1926-27 |
| Uphill | R. G. | Greenbushes | Overland | BN ● 30 | Balingup Road Board | 1927-28 |
| Uphill | R. G. D. | Lower Chittering | Essex | CH ● 37 | Chittering Road Board | 1927-28 |
| Uphill | Roy | Balingup | Branch 4½ H.P. Motorcycle | BN ● 6 | Balingup Road Board | 1922-23 |
| Uplands | - | 9 Queen Street | Little 10 H.P. | P 625 | Perth Municipality | 1917-18 |
| Uplands Tea Co | - | 9 Queen Street, Perth | Ford | 4737 | Metro Private Car | 1923-24 |
| Uplands Tea Coy. | - | 9 Queen Street, Perth | Ford | 2359 | Metro Private Car | 1923-24 |
| Upman & Clowes | Grosvenor Hotel | Perth | G.L. Car | 5337 | Metro Private Car | 1924-25 |
| Upnam & Clowes | - | Grosvener Hotel, Perth | G.N. Car | 5337 | Metro Private Car | 1926-27 |
| Upper Blackwood Road Board | - | - | Chevrolet Truck | BU ● 6 | Upper Blackwood Road Board | 1927-28 |
| Upper Chapman Road Board | - | - | Ruggles Truck | CU ● 1 | Upper Chapman Road Board | 1926-27 |
| Upper Chapman Road Board | - | - | Ruggles Truck | CU ● 1 | Upper Chapman Road Board | 1927-28 |
| Upper Chapman Road Board | - | - | Chevrolet Truck | CU ● 193 | Upper Chapman Road Board | 1927-28 |
| Upper Gascoyne Road Board | - | Gascoyne Junction | Ford Truck | GU ● 50 | Upper Gascoyne Road Board | 1925-26 |
| Upper Gascoyne Road Board | - | Gas-Junction | Ford Truck | GU ● 14 | Upper Gascoyne Road Board | 1926-27 |
| Upper Gascoyne Road Board | - | Gascoyne Junction | Ford Truck | GU ● 50 | Upper Gascoyne Road Board | 1926-27 |
| Upper Gascoyne Road Board | - | - | Ford Truck | GU ● 14 | Gascoyne Upper Road Board | 1927-28 |
| Upper Gascoyne Road Board | - | Gascoyne Junction | Ford Truck | GU ● 50 | Gascoyne Upper Road Board | 1927-28 |
| Upper Gascoyne Road Board | - | - | Ford Truck | GU ● 57 | Gascoyne Upper Road Board | 1927-28 |
| Upper Gascoyne Road Board | - | - | Ford Truck | GU ● 58 | Gascoyne Upper Road Board | 1927-28 |
