| English | Spanish |
| Asymptotic Giant Branch | Rama Asintótica de Gigantes |
| giant African threadfin | barbudo rayado (Polynemus quadrifilis) |
| giant barnacle | balano gigante (Megabalanus psittacus) |
| giant brown seaweeds | laminarias (Laminariaceae) |
| giant brown seaweeds | laminariaceas (Laminariaceae) |
| giant brown seaweeds | algas macroscopicas (Laminariaceae) |
| giant fescue | festuca gigantea (Festuca gigantea Vill.) |
| giant filbert | avellano de Lambert (Corylus maxima, Corylus tubulosa) |
| "Giant Governor" banana | banano gigante "Giant Governor" |
| "Giant Governor" banana | "Grande naine" |
| giant grouper | mero lanceolado (Epinephelus lanceolatus) |
| giant horntail | sirice gigante (Sirex gigas, Urocerus gigas, Urocerus gigas flavicornis, Xanthosirex gigas) |
| giant kelp | gran kelp (Macrocystis pyrifera) |
| giant kelp | macrocistos (Macrocystis pyrifera) |
| giant kelp | macrocistis (Macrocystis pyrifera) |
| giant kelp | macrocystis (Macrocystis pyrifera) |
| giant moth-borer | taladrador gigantesco (Castnia licas, Castnia licoides, Castnia licus) |
| giant pearlwinkle | peonza sudafricana (Turbo sarmaticus) |
| giant petrel | petrel gigante (Macronectes giganteus) |
| giant ragweed US | artemisa grande (Ambrosia trifida L.) |
| giant salamander | salamandra gigante (Andrias, Megalobatrachus) |
| giant stropharia | strofaria gigante (Stropharia rugoso annulata) |
| giant sugarcane borer | taladrador gigantesco (Castnia licas, Castnia licoides, Castnia licus) |
| giant tiger prawn | langostino yumbo (Penaeus monodon) |
| giant tiger prawn | langostino jumbo (Penaeus monodon) |
| giant turkey | pavo gigante |
| giant willow aphid | pulgón grande del sauce (Lachnus salignus, Pterochlorus salignus, Tuberolachnus fuliginosus, Tuberolachnus punctatus, Tuberolachnus ribarius, Tuberolachnus salicina, Tuberolachnus salicis, Tuberolachnus salignus) |
| giant wood wasp | sirice gigante (Sirex gigas, Urocerus gigas, Urocerus gigas flavicornis, Xanthosirex gigas) |
