List of invasive plant species in Oregon
# List of invasive plant species in Oregon

Numerous plants have been introduced to Oregon, and many of them have become invasive species. The following are some of these species:

| Scientific Name | Common Name |
| - | - |
| Ailanthus altissima | tree of heaven |
| Ammophila arenaria | marram grass |
| Brachypodium sylvaticum | false-brome |
| Bromus tectorum | drooping brome |
| Buddleja davidii | summer lilac |
| Carduus acanthoides | spiny plumeless thistle |
| Carduus nutans | musk thistle |
| Centaurea cyanus | cornflower |
| Cirsium vulgare | spear thistle |
| Clematis vitalba | old man's beard |
| Cortaderia jubata | purple pampas grass |
| Crataegus monogyna | common hawthorn |
| Cyperus rotundus | coco-grass |
| Cytisus scoparius | common broom |
| Cytisus striatus | hairy-fruited broom |
| Daphne laureola | spurge-laurel |
| Egeria densa | large-flowered waterweed |
| Elaeagnus angustifolia | Russian olive |
| Euphorbia esula | green spurge |
| Euphorbia myrsinites | myrtle spurge |
| Fallopia sachalinensis | giant knotweed |
| Foeniculum vulgare | Florence fennel |
| Genista monspessulana | French broom |
| Geranium lucidum | shining cranesbill |
| Geranium robertianum | herb-Robert |
| Hedera helix | common ivy |
| Hedera hibernica | Atlantic ivy |
| Ilex aquifolium | common holly |
| Impatiens glandulifera | impatiens |
| Iris pseudacorus | yellow flag |
| Kali tragus | prickly Russian thistle |
| Koenigia polystachya | Himalayan knotweed |
| Linaria dalmatica | Balkan toadflax |
| Linaria vulgaris | common toadflax |
| Logfia gallica | narrowleaf cottonrose |
| Lythrum salicaria | purple loosestrife |
| Phalaris arundinacea | reed canary grass |
| Pilosella aurantiaca | fox-and-clubs |
| Reynoutria japonica | Japanese knotweed |
| Rubus armeniacus | Himalayan blackberry |
| Rubus laciniatus | cutleaf evergreen blackberry |
| Salix × fragilis | crack willow |
| Spartium | Spanish broom |
| Tamarix ramosissima | saltcedar |
| Torilis arvensis | spreading hedgeparsley |
| Ulex | gorse |
