| Bacteria | | Proteobacteria | Liberibacter africanus (African greening) | Widespread | | | EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Agrotis ipsilon (black cutworm) | Present | | | CIE, 1969 |
| Eukaryota | Metazoa | Arthropoda | Aleurothrixus floccosus (woolly whitefly) | Present | | | EPPO, 2014; CABI/EPPO, 1997 |
| Eukaryota | Metazoa | Arthropoda | Aonidiella aurantii (red scale) | Present | | | IIE, 1996 |
| Eukaryota | Metazoa | Arthropoda | Aonidiella orientalis (oriental yellow scale) | Present | | | NHM, 1959 |
| Eukaryota | Metazoa | Arthropoda | Aphis craccivora (groundnut aphid) | Present | | | CIE, 1983 |
| Eukaryota | Metazoa | Arthropoda | Aphis gossypii (cotton aphid) | Present | | | UK CAB International, 1968 |
| Eukaryota | Metazoa | Arthropoda | Brevipalpus phoenicis (false spider mite) | Present | | | CABI/EPPO, 2013 |
| Eukaryota | Metazoa | Arthropoda | Cactoblastis cactorum (cactus moth) | Present | Introduced | | ISSG, 2011; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Ceratitis capitata (Mediterranean fruit fly) | Restricted distribution | Introduced | Yes | EPPO, 2014; CABI/EPPO, 2015 |
| Eukaryota | Metazoa | Arthropoda | Ceratitis cosyra (mango fruit fly) | Absent, intercepted only | | | CABI & EPPO, 1999; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Chrysodeixis chalcites (golden twin-spot moth) | Present | Native | | CIE, 1977 |
| Eukaryota | Metazoa | Arthropoda | Crocidosema plebejana (cotton tipworm) | Present, see datasheet for details | | | |
| Eukaryota | Metazoa | Arthropoda | Cryptotermes brevis (powderpost termite) | Present | Introduced | Yes | Chhotani, 1970 |
| Eukaryota | Metazoa | Arthropoda | Culex quinquefasciatus (southern house mosquito) | Widespread | | | Medlock et al., 2010 |
| Eukaryota | Metazoa | Arthropoda | Dacus ciliatus (lesser pumpkin fly) | Present | | | CABI/EPPO, 2002; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Dysmicoccus brevipes (pineapple mealybug) | Present, see datasheet for details | | | |
| Eukaryota | Metazoa | Arthropoda | Gonipterus scutellatus (eucalyptus snout beetle) | Present | | | Cadahia, 1986; CABI/EPPO, 2010; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Helicoverpa armigera (cotton bollworm) | Present | | | IIE, 1993; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Heliothrips haemorrhoidalis (black tea thrips) | Present | | | CIE, 1961 |
| Eukaryota | Metazoa | Arthropoda | Hemiberlesia lataniae (latania scale) | Present | | | CIE, 1976 |
| Eukaryota | Metazoa | Arthropoda | Hylurgus ligniperda (red-haired pine bark beetle) | Present | Introduced | Yes | Schedl, 1959; Wood & Bright, 1992; CABI/EPPO, 2010 |
| Eukaryota | Metazoa | Arthropoda | Icerya purchasi (cottony cushion scale) | Present | Introduced | Yes | CIE, 1971; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Insignorthezia insignis (greenhouse orthezia) | Present | | | Booth et al., 1995 |
| Eukaryota | Metazoa | Arthropoda | Macrosiphum euphorbiae (potato aphid) | Present | Introduced | | CIE, 1984 |
| Eukaryota | Metazoa | Arthropoda | Myzus persicae (green peach aphid) | Present | | | CIE, 1979 |
| Eukaryota | Metazoa | Arthropoda | Nezara viridula (green stink bug) | Present | | | CABI/EPPO, 1998 |
| Eukaryota | Metazoa | Arthropoda | Opogona sacchari (banana moth) | Present | Native | Yes | Durrant, 1925; Suss, 1974; CABI & EPPO, 1999; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Otiorhynchus sulcatus (vine weevil) | Widespread | | | Decelle & Voss, 1972; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Paratrechina longicornis (crazy ant) | Present | Introduced | | ISSG, 2011 |
| Eukaryota | Metazoa | Arthropoda | Pheidole megacephala (big-headed ant) | Present | Introduced | | ISSG, 2009 |
| Eukaryota | Metazoa | Arthropoda | Phthorimaea operculella (potato tuber moth) | Present | | | CABI/EPPO, 2012; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Planococcus citri (citrus mealybug) | Present | | | CABI/EPPO, 1999 |
| Eukaryota | Metazoa | Arthropoda | Plutella xylostella (diamondback moth) | Present | | | CIE, 1967 |
| Eukaryota | Metazoa | Arthropoda | Pseudaulacaspis pentagona (mulberry scale) | Present | | | EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Pseudococcus viburni (osbcure mealybug) | Present | Introduced | | Garcia et al., 2016; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Spodoptera littoralis (cotton leafworm) | Present | | | CIE, 1967; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Tapinoma melanocephalum (ghost ant) | Present | Introduced | | Wetterer, 2009 |
| Eukaryota | Metazoa | Arthropoda | Tetranychus urticae (two-spotted spider mite) | Present | | | IIE, 1996 |
| Eukaryota | Metazoa | Arthropoda | Thaumatotibia leucotreta (false codling moth) | Present | | | EPPO, 2014; CABI/EPPO, 2002 |
| Eukaryota | Metazoa | Arthropoda | Toxoptera citricida (black citrus aphid) | Present | | | CABI/EPPO, 1998; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Trioza erytreae (African citrus psyllid) | Present | | | EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Vespula germanica (German wasp) | Present, see datasheet for details | | | |
| Eukaryota | Metazoa | Arthropoda | Vespula vulgaris (wasp, common) | Restricted distribution | Introduced | | ISSG, 2011 |
| Eukaryota | Metazoa | Chordata | Acridotheres tristis (common myna) | Present | Introduced | Yes | ISSG, 2011 |
| Eukaryota | Metazoa | Chordata | Canis lupus familiaris (dogs) | Present | Introduced | Yes | ISSG, 2011 |
| Eukaryota | Metazoa | Chordata | Capra hircus (goats) | See datasheet for status | | | |
| Eukaryota | Metazoa | Chordata | Columba livia (pigeons) | Present | Introduced | | ISSG, 2011 |
| Eukaryota | Metazoa | Chordata | Equus asinus (donkeys) | Present | Introduced | Yes | ISSG, 2011 |
| Eukaryota | Metazoa | Chordata | Felis catus (cat) | Present | Introduced | Yes | ISSG, 2011 |
| Eukaryota | Metazoa | Chordata | Mus musculus (house mouse) | Present | Introduced | Yes | ISSG, 2011 |
| Eukaryota | Metazoa | Chordata | Oryctolagus cuniculus (rabbits) | Present | Introduced | | ISSG, 2011 |
| Eukaryota | Metazoa | Chordata | Ovis aries (sheep) | Present | Introduced | | ISSG, 2011 |
| Eukaryota | Metazoa | Chordata | Passer domesticus (house sparrow) | See datasheet for status | | | |
| Eukaryota | Metazoa | Chordata | Phasianus colchicus (common pheasant) | Present | Introduced | | Lever, 2005 |
| Eukaryota | Metazoa | Chordata | Rattus norvegicus (brown rat) | Present | Introduced | Yes | ISSG, 2011 |
| Eukaryota | Metazoa | Chordata | Rattus rattus (black rat) | Present | Introduced | Yes | ISSG, 2011 |
| Eukaryota | Metazoa | Chordata | Tyto alba (Barn owl) | Present | Introduced | | Long, 1981 |
| Eukaryota | Metazoa | Chordata | Xenopus laevis (African clawed frog) | Present, see datasheet for details | | | |
| Eukaryota | Metazoa | Mollusca | Cornu aspersum (common garden snail) | Present | Introduced | | Taylor, 1914 |
| Eukaryota | Metazoa | Mollusca | Deroceras invadens (tramp slug) | Present, see datasheet for details | | | |
| Eukaryota | Metazoa | Mollusca | Limax maximus (leopard slug) | Present | Introduced | | GBIF, 2015 |
| Eukaryota | Metazoa | Mollusca | Oxychilus alliarius (garlic snail) | Present | Introduced | | Barker, 1999; Crowley & Pain, 1977 |
| Eukaryota | Plantae | Pteridophyta | Cyclosorus parasiticus (parasitic maiden fern) | Widespread | Native | | Holttum, 1976; A. Darlow, Invasive Species Project officer, St. Helena, personal communication, 2013 |
| Eukaryota | Plantae | Spermatophyta | Ageratum conyzoides (billy goat weed) | Present | Introduced | | Reed, 1977 |
| Eukaryota | Plantae | Spermatophyta | Ageratum houstonianum (blue billygoat weed) | Present | Introduced | | Cronk, 1989 |
| Eukaryota | Plantae | Spermatophyta | Agrostis capillaris (common bent) | Present | Introduced | Yes | Varnham, 2006 |
| Eukaryota | Plantae | Spermatophyta | Amaranthus dubius (leafy amaranth) | Present | Introduced | | GBIF, 2014 |
| Eukaryota | Plantae | Spermatophyta | Argemone mexicana (Mexican poppy) | Widespread | Introduced | Yes | Ashmole & Ashmole, 2000 |
| Eukaryota | Plantae | Spermatophyta | Arundo donax (giant reed) | Present | Introduced | | Clayton et al., 2014 |
| Eukaryota | Plantae | Spermatophyta | Barringtonia asiatica (sea poison tree) | Present | Introduced | | USDA-ARS, 2014 |
| Eukaryota | Plantae | Spermatophyta | Carpobrotus edulis (hottentot fig) | Present | Introduced | | GISP, 2008 |
| Eukaryota | Plantae | Spermatophyta | Catharanthus roseus (Madagascar periwinkle) | Present | Introduced | | Govaerts, 2015 |
| Eukaryota | Plantae | Spermatophyta | Centella asiatica (Asiatic pennywort) | Present | Native | | GBIF, 2014 |
| Eukaryota | Plantae | Spermatophyta | Cinchona pubescens (quinine tree) | Restricted distribution | Introduced | Yes | Cronk & Fuller, 1995 |
| Eukaryota | Plantae | Spermatophyta | Clidemia hirta (Koster's curse) | Present, see datasheet for details | | | |
| Eukaryota | Plantae | Spermatophyta | Colocasia esculenta (taro) | Present | Introduced | | Govaerts, 2012 |
| Eukaryota | Plantae | Spermatophyta | Cynodon dactylon (Bermuda grass) | Present | Introduced | | Clayton et al., 2014 |
| Eukaryota | Plantae | Spermatophyta | Cynodon nlemfuensis (African Bermuda-grass) | Present | Introduced | | Clayton et al., 2013 |
| Eukaryota | Plantae | Spermatophyta | Cyperus difformis (small-flowered nutsedge) | Present | Introduced | | Govaerts, 2014 |
| Eukaryota | Plantae | Spermatophyta | Cyperus esculentus (yellow nutsedge) | Present | Introduced | | USDA-ARS, 2014 |
| Eukaryota | Plantae | Spermatophyta | Cyperus rotundus (purple nutsedge) | Present | Native | | Govaerts, 2014 |
| Eukaryota | Plantae | Spermatophyta | Delairea odorata (Cape ivy) | Present | Introduced | | Hilliard, 1977 |
| Eukaryota | Plantae | Spermatophyta | Digitaria ciliaris (southern crabgrass) | Present | | | Clayton et al., 2014 |
| Eukaryota | Plantae | Spermatophyta | Echinochloa pyramidalis | Present | Introduced | | GBIF, 2012 |
| Eukaryota | Plantae | Spermatophyta | Eleusine indica (goose grass) | Present | Introduced | | Clayton et al., 2014 |
| Eukaryota | Plantae | Spermatophyta | Emex australis (Doublegee) | Present, see datasheet for details | | | |
| Eukaryota | Plantae | Spermatophyta | Euphorbia tirucalli (euphorbia) | Present | | | |
| Eukaryota | Plantae | Spermatophyta | Fimbristylis cymosa (tropical fimbry) | Present | Introduced | | IUCN, 2015 |
| Eukaryota | Plantae | Spermatophyta | Galinsoga parviflora (gallant soldier) | Present | Introduced | | USDA-ARS, 2014 |
| Eukaryota | Plantae | Spermatophyta | Grevillea robusta (silky oak) | Present | Introduced | | ISSG, 2015 |
| Eukaryota | Plantae | Spermatophyta | Hedychium coronarium (white butterfly ginger lily) | Present | Introduced | | Govaerts, 2013 |
| Eukaryota | Plantae | Spermatophyta | Hypochaeris radicata (cat's ear) | Present | Introduced | | GBIF, 2014 |
| Eukaryota | Plantae | Spermatophyta | Juncus effusus (common rush) | Present | Introduced | | Weimarck, 1946 |
| Eukaryota | Plantae | Spermatophyta | Lantana camara (lantana) | Widespread | Introduced | Yes | Cronk, 1989 |
| Eukaryota | Plantae | Spermatophyta | Leonurus japonicus (honeyweed) | Present | Introduced | | Govaerts, 2014 |
| Eukaryota | Plantae | Spermatophyta | Leucaena leucocephala (leucaena) | Present | Introduced | | ISSG, 2010 |
| Eukaryota | Plantae | Spermatophyta | Megathyrsus maximus (Guinea grass) | Present | Introduced | | Clayton et al., 2013 |
| Eukaryota | Plantae | Spermatophyta | Mesembryanthemum crystallinum (crystalline iceplant) | Present | Native | | USDA-ARS, 2015 |
| Eukaryota | Plantae | Spermatophyta | Nicotiana glauca (tree tobacco) | Present | Introduced | Yes | ISSG, 2013 |
| Eukaryota | Plantae | Spermatophyta | Opuntia elatior (red-flower prickly pear) | Present | Introduced | | Royal Botanic Gardens Kew, 2014 |
| Eukaryota | Plantae | Spermatophyta | Opuntia monacantha (common prickly pear) | Present | Introduced | | GBIF, 2013 |
| Eukaryota | Plantae | Spermatophyta | Paspalidium geminatum (Egyptian paspalidium) | Present | Introduced | Yes | Royal Botanic Gardens Kew, 2012 |
| Eukaryota | Plantae | Spermatophyta | Paspalum urvillei (Vasey grass) | Present | Introduced | | GBIF, 2012 |
| Eukaryota | Plantae | Spermatophyta | Pennisetum purpureum (elephant grass) | Present | Introduced | | Clayton et al., 2013 |
| Eukaryota | Plantae | Spermatophyta | Physalis peruviana (Cape gooseberry) | Present | Introduced | | GBIF, 2012 |
| Eukaryota | Plantae | Spermatophyta | Pittosporum undulatum (Australian cheesewood) | Present | Introduced | Yes | Haysom & Murphy, 2003 |
| Eukaryota | Plantae | Spermatophyta | Poa annua (annual meadowgrass) | Present | Introduced | Yes | ISSG, 2014 |
| Eukaryota | Plantae | Spermatophyta | Poa pratensis (smooth meadow-grass) | Present | Introduced | Yes | ISSG, 2015 |
| Eukaryota | Plantae | Spermatophyta | Psidium cattleianum (strawberry guava) | Present | Introduced | | Govaerts, 2015 |
| Eukaryota | Plantae | Spermatophyta | Ricinus communis (castor bean) | Present | Introduced | | Govaerts, 2014 |
| Eukaryota | Plantae | Spermatophyta | Rumex acetosella (sheep's sorrel) | Present | Introduced | | ISSG, 2013; GBIF, 2013 |
| Eukaryota | Plantae | Spermatophyta | Schinus terebinthifolius (Brazilian pepper tree) | Present | Introduced | | PROTA, 2014 |
| Eukaryota | Plantae | Spermatophyta | Sesbania sesban (sesban) | Present | Native | | ILDIS, 2014 |
| Eukaryota | Plantae | Spermatophyta | Spermacoce verticillata (shrubby false buttonwood) | Present | Introduced | Yes | Renshaw et al., 2012 |
| Eukaryota | Plantae | Spermatophyta | Sporobolus africanus (rat’s tail grass) | Present | Introduced | | eMonocot, 2016 |
| Eukaryota | Plantae | Spermatophyta | Stenotaphrum secundatum (buffalo grass) | Present | Introduced | | Sauer, 1972 |
| Eukaryota | Plantae | Spermatophyta | Tetragonia tetragonioides (New Zealand spinach) | Present | Introduced | | Cronk, 1983 |
| Eukaryota | Plantae | Spermatophyta | Ulex europaeus (gorse) | Present | Introduced | Yes | Julien & Griffiths, 1998 |
| Eukaryota | Plantae | Streptophyta | Campylopus introflexus | Present | Native | | Frahm, 1985a |