| Subject | English | Irish |
| life.sc., agric. | argan tree | crann argáin (Argania spinosa) |
| life.sc., agric. | bel-fruit tree | crann cainche Beangálach (Aegle marmelos) |
| life.sc., environ. | Bennett's tree kangaroo | cangarú crainn Bennet (Dendrolagus bennettianus) |
| environ. | broad-leaved tree Deciduous tree which has wide leaves, as opposed to the needles on conifers | crann leathanduilleach |
| life.sc., agric., forestr. | carob bean tree | crann caróib (Ceratonia siliqua L.) |
| life.sc., agric., forestr. | carob tree | crann caróib (Ceratonia siliqua L.) |
| oil | Christmas tree | crann barr tobair |
| oil | Christmas tree assembly | crann barr tobair |
| life.sc., forestr. | coniferous tree | crann buaircíneach (Coniferae) |
| environ. | coniferous tree | crann buaircíneach |
| life.sc., forestr. | coniferous tree | buaircíneach (Coniferae) |
| environ. | deciduous tree Tree losing its leaves in autumn and growing new ones in the spring | crann duillsilteach |
| account. | decision tree | crann cinnteoireachta |
| life.sc., nat.res. | Eurasian tree sparrow | gealbhan crainn |
| gen. | family tree | craobh ghinealaigh (arbor consanguinitatis) |
| IT, tech. | fault tree analysis | crann-anailís fabhtanna |
| forestr. | forked tree | crann gabhlach |
| environ. | fruit tree Any tree that bears edible fruit | crann torthaí |
| environ., nat.res. | Goodfellow's tree kangaroo | cangarú crainn Goodfellow (Dendrolagus goodfellowi) |
| life.sc., agric. | Greek strawberry tree | caithne ghréagach (Arbutus andrachne) |
| life.sc., environ. | grizzled tree kangaroo | cangarú crainn liath (Dendrolagus inustus) |
| nat.sc., agric. | grizzled tree-kangaroo | cangarú crainn liath (Dendrolagus inustus) |
| agric. | grubbing of fruit trees | grafadh crann torthaí |
| agric. | hazelnut-tree | coll (corylus avellana) |
| life.sc., agric., forestr. | locust tree | crann caróib (Ceratonia siliqua L.) |
| life.sc., environ. | Lumholtz's tree kangaroo | cangarú crainn Lumholtz (Dendrolagus lumholtzi) |
| nat.res. | Madagascar tree boa | bua crainn Madagascar (Sanzinia madagascariensis) |
| environ., nat.res. | Matschie's tree kangaroo | cangarú crainn Matschie (Dendrolagus matschiei) |
| environ., nat.res. | Mexican tree porcupine | torcán crainn Meicsiceach (Sphiggurus mexicanus) |
| transp. | minimum path tree | crann na n-íoschonairí |
| forestr. | monkey puzzle tree | crann arócair (Araucaria araucana, Araucaria imbricata) |
| life.sc., environ. | monkey-puzzle tree | crann arócair (Araucaria araucana) |
| environ., nat.res. | Oahu tree snails | seilide agáite beag (Achatinella spp.) |
| life.sc., agric. | olive tree | crann ológ (Olea europaea) |
| life.sc., agric. | pecan tree | crann cnó peacáin (Carya illinoinensis) |
| life.sc., agric. | pomegranate tree | crann pomagránaite (Punica granatum) |
| comp., MS | Quick Tag Tree | Crann Mearchlibe (The hierarchical HTML tag structure of an opened HTML document that appears in a window docked beneath the quick tag selector) |
| life.sc. | Rose tree of China | crann róis Síneach (Prunus triloba) |
| life.sc., agric., forestr. | Saint John's bread tree | crann caróib (Ceratonia siliqua L.) |
| nat.res. | Sanzinia tree boa | bua crainn Madagascar (Sanzinia madagascariensis) |
| life.sc., agric. | service tree | crann soirb (Sorbus domestica) |
| life.sc., environ. | small-scaled tree pangolin | pangailin chrainn mionghainní (Manis tricuspis) |
| environ., nat.res. | spiny tree porcupine | torcán crainn spíonach (Sphiggurus spinosus) |
| life.sc. | strawberry tree | caithne (Arbutus unedo) |
| life.sc. | Swedish service tree | fionncholl Fionlannach (Sorbus hybrida) |
| life.sc., agric. | sweet orange tree | crann oráistí milse |
| comp., MS | tag tree | crann táb (The hierarchical HTML tag structure of an opened HTML document that appears in a task pane window) |
| gen. | tree density | leibhéal stocála |
| agric. | tree felling | leagan crann |
| nat.sc., agric. | tree-fern family | fine na raithní craobhaí (Cyatheaceae) |
| environ. | tree nursery An area where trees, shrubs, or plants are grown for transplanting, for use as stocks for budding and grafting | plandlann chrann |
| agric., forestr. | tree seed garden | síolghort |
| agric., forestr. | tree seed orchard | síolghort |
| life.sc., nat.res. | tree sparrow | gealbhan crainn |
| environ., nat.res. | unicoloured tree kangaroo | cangarú crainn aondathach (Dendrolagus dorianus) |
| life.sc., environ. | ursine tree kangaroo | cangarú crainn Vogelkop (Dendrolagus ursinus) |
| environ., nat.res. | Virgin Island tree boa | bua crainn Oileáin na Maighdean (Epicrates monensis) |
| environ., nat.res. | vogelkop tree-kangaroo | cangarú crainn Vogelkop (Dendrolagus ursinus) |
| life.sc., agric. | wild service tree | crann soirb fiáin (Sorbus torminalis) |
| life.sc., environ. | yellow tree or Puerto Rico boa, culebra grande | bua Portó Ríceach (Epicrates inornatus) |
| stat., agric. | yield per tree | táirgeacht in aghaidh an chrainn |