- Galeandra baueri
- Galeandra juncea
- Galeandra minax
- Galeopetalum Princesa Huri
- Gastrochilus acutifolius
- Gastrochilus fuscopunctatus
- Gastrochilus japonicus
- Gastrochilus obliquus
-
Gomesa gutfreundiana
- Gomesa novaesae
- Gomesa recurva
-
Gomesa sarcodes
- Gongora aromatica
- Gongora atropurpurea
- Gongora cassidea
- Gongora catilligera
- Gongora chocoensis
- Gongora ecornuta
- Gongora flaveola
- Gongora galeata
- Gongora gratulabunda
- Gongora histrionica
- Gongora horichiana
- Gongora irmgardiae
- Gongora nigropunctata
- Gongora odoratissima
- Gongora portentosa
- Gongora quinquenervis
- Gongora rufescens
- Gongora scaphephorus
- Gongora tridentata
- Gongora unicolor
- Grammangis ellisii
- Grammatocymbidium Lovely Melody 'HK' (Cym. ensifolium x Gram. scriptum)
- Grammatophyllum Green
- Grammatophyllum multiflora var. citrinum
- Grammatophyllum scriptum
- Grammatophyllum scriptum citrina
- Grammatophyllum scriptum var. citrinum Green
- Grammatophyllum stapeliiflorum
- Grammatophyllum Yuan Nan Tiger Praw
- Grobya amherstiae
- Grosourdya appendiculata
- Guarianthe aurantiaca
- Guarianthe aurantiaca 'Mishima Spot'
- Guarianthe skinneri 'Heiti Jaсobs'
- Guarianthe skinneri alba
- Guarisophleya Kauai Starbright x (Faye Miyamoto x President Fortune)
- Guarisophleya Sunrise Doll 'Sweet Valentine'