| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Lake Biddy | city | State of Western Australia | Australia | -33 | 118.95 | 997 | 19 |
| Lake Brown | city | State of Western Australia | Australia | -30.95 | 118.3333333 | 1115 | 28 |
| Lake Camm | city | State of Western Australia | Australia | -32.9833333 | 119.5833333 | 1135 | 19 |
| Lake Grace | city | State of Western Australia | Australia | -33.1 | 118.4666667 | 997 | 19 |
| Lake King | city | State of Western Australia | Australia | -33.0833333 | 119.6666667 | 1040 | 19 |
| Lake Varley | city | State of Western Australia | Australia | -32.7666667 | 119.45 | 1266 | 19 |
| Lakewood | city | State of Western Australia | Australia | -30.8 | 121.5333333 | 1502 | 42 |
| Lalla Rookh | city | State of Western Australia | Australia | -21.05 | 119.2666667 | 583 | 0 |
| Lalla Rookh Mining Centre | city | State of Western Australia | Australia | -21.05 | 119.2666667 | 583 | 0 |
| Lancelin | city | State of Western Australia | Australia | -31.0233333 | 115.3319444 | 19 | 44 |
| Lancing | city | State of Western Australia | Australia | -33.0833333 | 118.95 | 997 | 19 |
| Larkinville | city | State of Western Australia | Australia | -31.4333333 | 121.5 | 1328 | 26 |
| Latham | city | State of Western Australia | Australia | -29.75 | 116.4333333 | 1026 | 14 |
| Laurier | city | State of Western Australia | Australia | -34.05 | 118.35 | 731 | 47 |
| Laverton | city | State of Western Australia | Australia | -28.6333333 | 122.4166667 | 1624 | 0 |
| Lawlers | city | State of Western Australia | Australia | -28.0833333 | 120.5166667 | 1738 | 14 |
| Lawnswood | city | State of Western Australia | Australia | -31.7 | 116.5166667 | 931 | 285 |
| Learmonth | city | State of Western Australia | Australia | -22.25 | 114.0833333 | 9 | 87 |
| Leeman | city | State of Western Australia | Australia | -29.9458333 | 114.9805556 | 59 | 26 |
| Lennonville | city | State of Western Australia | Australia | -27.9666667 | 117.8333333 | 1512 | 5 |
| Leonora | city | State of Western Australia | Australia | -28.8833333 | 121.3166667 | 1519 | 12 |
| Lilliginni | city | State of Western Australia | Australia | -31.05 | 120.7666667 | 1568 | 28 |
| Linden | city | State of Western Australia | Australia | -29.3 | 122.4166667 | 1601 | 9 |
| Lionel | city | State of Western Australia | Australia | -21.65 | 120.1166667 | 1040 | 0 |
| Lloyd Crossing | city | State of Western Australia | Australia | -31.5666667 | 116.4833333 | 666 | 245 |
| Logans Find | city | State of Western Australia | Australia | -31.3666667 | 121.3833333 | 1407 | 28 |
| Lomos | city | State of Western Australia | Australia | -32.3666667 | 117.6166667 | 997 | 61 |
| Londonderry | city | State of Western Australia | Australia | -31.0833333 | 121.1333333 | 1656 | 28 |
| Loongana | city | State of Western Australia | Australia | -30.95 | 127.0333333 | 623 | 42 |
| Lowden | city | State of Western Australia | Australia | -33.5333333 | 115.9666667 | 275 | 656 |
| Lower Chittering | city | State of Western Australia | Australia | -31.5833333 | 116.1166667 | 534 | 1603 |
| Lower Chittertering | city | State of Western Australia | Australia | -31.5833333 | 116.1166667 | 534 | 1603 |
| Lower King | city | State of Western Australia | Australia | -34.9577778 | 117.9383333 | 154 | 1421 |
| Ludlow | city | State of Western Australia | Australia | -33.6 | 115.4666667 | 13 | 1157 |
| Lumeah | city | State of Western Australia | Australia | -33.9833333 | 117.2333333 | 1059 | 98 |
| Lyons Camp | city | State of Western Australia | Australia | -30.5333333 | 116.3166667 | 705 | 89 |