- Dendrobium habbemense
- Dendrobium hagerupii
- Dendrobium hainanense – Hainan Dendrobium
- Dendrobium hallieri
- Dendrobium halmaheirense
- Dendrobium hamadryas
- Dendrobium hamaticalcar
- Dendrobium hamatum
- Dendrobium hamiferum
- Dendrobium hancockii – Hancock's Dendrobium
- Dendrobium harveyanum – Hancock's Dendrobium
- Dendrobium hasseltii – Hasselt's Dendrobium, Spinach orchid
- Dendrobium hastilabium
- Dendrobium hawkesii
- Dendrobium helix – Twist-petalled Dendrobium, Corkscrew Orchid
- Dendrobium hellerianum
- Dendrobium hellwigianum – Hellwig's Dendrobium
- Dendrobium helvolum
- Dendrobium hemimelanoglossum – Half-black-lipped Dendrobium
- Dendrobium henanense
- Dendrobium hendersonii
- Dendrobium henryi
- Dendrobium hepaticum
- Dendrobium herbaceum
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- Dendrobium hercoglossum – Rampart-lipped Dendrobium
- Dendrobium herpetophytum
- Dendrobium heterocarpum – Different-fruited dendrobium
- Dendrobium heteroglossum
- Dendrobium hexadesmia
- Dendrobium hippocrepiferum
- Dendrobium hirtulum
- Dendrobium histrionicum
- Dendrobium hodgkinsonii
- Dendrobium hollandianum
- Dendrobium holochilum
- Dendrobium hookerianum
- Dendrobium hornei
- Dendrobium horstii
- Dendrobium hosei
- Dendrobium hughii
- Dendrobium humboldtense
- Dendrobium huoshanense
- Dendrobium huttonii
- Dendrobium hymenanthum – Membranous Dendrobium
- Dendrobium hymenocentrum
- Dendrobium hymenopetalum
- Dendrobium hymenophyllum – Delicately-leaved Dendrobium
- Dendrobium hymenopterum
- Dendrobium hyperanthiflorum
- Dendrobium hypodon
- Dendrobium hypopogon
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