| Longden | J. | Farmer & Sheepowner | Arthur River | 1882 | Herald Almanack |
| Longdon | T. | Farmer & Sheepowner | Arthur River | 1883 | Herald Almanack |
| Longdon | T. | Farmer & Sheepowner | Arthur River | 1884 | Herald Almanack |
| Longdon | T. | Farmer & Sheepowner | Arthur River | 1885 | Herald Almanack |
| Longham | G. | Farmer | Victoria Plains & Dandaragan | 1880 | WA Almanack |
| Longman | A. | Farmer & Grazier | Victoria Plains | 1874 | WA Almanack |
| Longman | G. | Farmer | Victoria Plains &c. | 1876 | WA Almanack |
| Longman | G. | Farmer | Victoria Plains & Dandaragan | 1877 | Herald Almanack |
| Longman | G. | Farmer | Victoria Plains | 1877 | WA Almanack |
| Longman | G. | Farmer | Victoria Plains & Dandaragan | 1878 | Herald Almanack |
| Longman | G. | Farmer | Victoria Plains & Dandaragan | 1879 | Herald Almanack |
| Longman | G. | Farmer | Victoria Plains & Dandaragan | 1879 | WA Almanack |
| Longman | G. | Farmer | Victoria Plains & Dandaragan | 1880 | Herald Almanack |
| Longman | G. | Farmer | Victoria Plains & Dandaragan | 1881 | Herald Almanack |
| Longman | G. | Farmer | Victoria Plains & Dandaragan | 1881 | WA Almanack |
| Longman | G. | Farmer | Victoria Plains & Dandaragan | 1882 | WA Almanack |
| Longman | G. | Farmer | Victoria Plains & Dandaragan | 1884 | WA Almanack |
| Longman | J. | Farmer | Victoria Plains, Dandaragan | 1885 | Herald Almanack |
| Longman | J. | Farmer | Victoria Plains | 1887 | WA Almanack |
| Longman | J. | Farmer | Victoria Plains | 1888 | WA Almanack |
| Longman | J. | Farmer | Victoria Plains | 1889 | WA Almanack |
| Longman | James | Farmer | Victoria Plains | 1887 | WA Almanack |
| Longman | James | Farmer | Victoria Plains | 1888 | WA Almanack |
| Longman | James | Farmer | Victoria Plains | 1889 | WA Almanack |
| Longman | John | Farmer | Victoria Plains, Dandaragan | 1885 | Herald Almanack |
| Longman | John & James | Farmers | Victoria Plains, Dandaragan | 1883 | Herald Almanack |
| Longman | John & James | Farmers | Victoria Plains, Dandaragan | 1884 | Herald Almanack |
| Longman | L. | Farmer | Victoria Plains, Dandaragan | 1885 | Herald Almanack |
| Longoulant | Chas. | | Jackson Street, North Fremantle | 1897 | Witton's Directory |
| Longoulant | J. | Lime Burner | Perth | 1884 | Herald Almanack |
| Longoulant | J. | Limeburner | Perth | 1885 | Herald Almanack |
| Longoulant | J. | Lime Burner | Perth | 1886 | WA Almanack |
| Longoulant | L. | Lime Burner | Perth | 1883 | Herald Almanack |
| Longoulant | L. | Lime Burner | Perth | 1884 | Herald Almanack |
| Longoulant | L. | Limeburner | Perth | 1885 | Herald Almanack |
| Longoulant | L. | Lime Burner | Perth | 1886 | WA Almanack |
| Longson | C. D'Arcy | Secretary | Upstairs, Exchange Court, Saint George's Terrace, Perth | 1897 | Witton's Directory |
| Longson | C. D. | | Hill Street, Perth | 1897 | Witton's Directory |
| Longson | C. DArcy | Stock and Share Broker (Late of Adelaide Exchange) | Perth | 1889 | WA Almanack |
| Longson | Darcy | Broker | Perth | 1886 | WA Almanack |
| Longstaff | B. | - | North-West Coast (Sherlock & George Rivers) | 1882 | WA Almanack |
| Longstaff | J. | Miner | Parker's Range | 1897 | Witton's Directory |
| Longulant | - | Lime Burner | Perth | 1882 | Herald Almanack |
| Lonigan | G. | Farmer | Victoria Plains & Dandaragan | 1882 | Herald Almanack |
| Lonsdale &c. | - | Surveyor (Patterson & Lonsdale) | Saint George's Terrace, Perth | 1885 | Herald Almanack |
| Lonyon | R. | Miner | Nannine | 1897 | Witton's Directory |
| Look | - | Blacksmith | Guildford & Suburbs | 1863 | WA Almanack |
| Look | - | Blacksmith | Guildford | 1864 | WA Almanack |
| Look | H | Contractor | Guildford | 1883 | Herald Almanack |
| Look | H. | Blacksmith | Guildford | 1865 | WA Almanack |
