This is a list of invasive species in South Africa, including invasive species of plants, animals, and other organisms in South Africa.

A list of invasive species has been published under the National Environmental Management: Biodiversity Act of 2004.^[1][2]

Microorganisms

Microorganisms considered to be invasive species include:^[3]

Algae

Invasive species of algae include:^[4]

• Codium fragile ssp. tomentosoides – dead man's fingers
• Hypnea musciformis – hypnea
• Kappaphycus spp. – agar-agars

Plants

Invasive species of plants include:^[5][6]

Tunicates

Invasive species of tunicates include:

Annelids

Invsive species of annelids include:^[9]

• Ficopomatus enigmaticus – Australian tubeworm
• Boccardia proboscidea – shell worm [1]

Molluscs

Invasive species of molluscs include:^[5][6][2]

• Aplexa marmorata – marbled tadpole snail [3]
• Bradybaena similaris – Asian trampsnail
• Cochlicella barbara – potbellied helicellid
• Deroceras invadens – tramp slug
• Deroceras laeve – marsh slug
• Cornu aspersum – garden snail
• Limax flavus – yellow slug
• Milax gagates – greenhouse slug
• Mytilus galloprovincialis – Mediterranean mussel^[10]
• Pseudosuccinea columella – mimic lymnaea
• Semimytilus algosus – Pacific mussel [4]
• Tarebia granifera – quilted melania
• Theba pisana – white garden snail
• Zonitoides arboreus – quick gloss

Crustaceans

Invasive species of crustaceans include:^[5]

• Carcinus maenas – European shore crab
• Cherax quadricarinatus – redclaw crayfish
• Procambarus clarkii – red swamp crayfish^[6]

Insects

Invasive species of insects include:^[5][11]

• Aedes albopictus – Asian tiger mosquito
• Anoplolepis gracilipes – yellow crazy ant
• Aphis spiraecola – green citrus aphid [5]
• Aulacaspis yasumatsui – cycad aulacaspis scale [6]
• Bactrocera invadens – Asian fruit fly
• Bemisia tabaci – silverleaf whitefly
• Cactoblastis cactorum – cactus moth
• Cinara cupressi – cypress aphid [7]
• Coptotermes formosanus – Formosan subterranean termite
• Cosmopolites sordidus – banana root borer [8]
• Cryptotermes brevis – West Indian drywood termite
• Ctenarytaina eucalypti – blue gum psyllid [9]
• Eulachnus rileyi – pine needle aphid [10]
• Frankliniella occidentalis – western flower thrips [11]
• Harmonia axyridis – Asian lady beetle
• Hylastes ater – black pine bark beetle
• Hylurgus ligniperda – red-haired pine bark beetle [12]
• Icerya purchasi – cottony cushion scale [13]
• Linepithema humile – Argentine ant
• Orthotomicus erosus – Mediterranean pine engraver
• Phenacoccus manihoti – cassava mealybug [14]
• Pineus pini – pine woolly aphid [15]
• Polistes dominula – European paper wasp
• Pseudococcus calceolariae – Citrophilus mealybug [16]
• Sirex noctilio – Sirex woodwasp
• Technomyrmex albipes – white-footed ant
• Thaumastocoris peregrinus – bronze bug [17]
• Vespula germanica – European wasp
• Xyleborinus saxesenii – fruit-tree pinhole borer [18]
• Xylosandrus compactus – black twig borer [19]

Fish

Invasive species of fish include:^[5][12]

• Ctenopharyngodon idella – grass carp
• Cyprinus carpio – common carp
• Gambusia affinis – western mosquitofish
• Hypophthalmichthys molitrix – silver carp
• Lepomis macrochirus – bluegill
• Micropterus dolomieu – smallmouth bass
• Micropterus punctulatus – spotted bass
• Micropterus salmoides – largemouth bass
• Micropterus salmoides floridanus – Florida bass
• Oreochromis niloticus – Nile tilapia (and hybrids)
• Perca fluviatilis – European perch
• Pterygoplichthys disjunctivus – vermiculated sailfin catfish
• Salmo salar – Atlantic salmon
• Tinca tinca – tench

Amphibians

Invasive species of amphibians include:

• Amietophrynus gutturalis – guttural toad [20]

Reptiles

Invasive species of reptiles include:^[5]

• Emys orbicularis – European pond turtle [21]
• Gehyra mutilata – stump-tailed gecko
• Hemidactylus frenatus – common house gecko^[13]
• Lepidodactylus lugubris – mourning gecko
• Tarentola mauritanica – Moorish wall gecko
• Trachemys scripta ssp. elegans – red-eared slider^[13]

Birds

Invasive species of birds include:^[5][14]

• Acridotheres tristis – common myna
• Anas platyrhynchos – mallard (and hybrids)
• Columba livia – rock dove
• Corvus splendens – house crow
• Fringilla coelebs – common chaffinch
• Sturus vulgaris – European starling

Mammals

Invasive species of mammals include:^[5][15]

• Felis silvestris – cat [22]
• Hemitragus jemlahicus – Himalayan tahr
• Mus musculus – house mouse
• Rattus rattus – black rat
• Sus scrofa – feral pig