- Dendrobium nabawanense
- Dendrobium nanocompactum
- Dendrobium nanum
- Dendrobium nardoides
- Dendrobium nareshbahadurii
- Dendrobium nathanielis
- Dendrobium navicula
- Dendrobium nebularum
- Dendrobium neglectum
- Dendrobium nemorale
- Dendrobium neoguineense
- Dendrobium nephrolepidis
- Dendrobium neuroglossun
- Dendrobium ngoyense
- Dendrobium nhatrangense
- Dendrobium nienkui
- Dendrobium nieuwenhuisii
- Dendrobium nigricans
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- Dendrobium nimium
- Dendrobium nindii – Cowslip orchid, Nind's Dendrobium
- Dendrobium nitidiflorum
- Dendrobium × nitidum (D. gracilicaule × D. pedunculatum; see also D. × gracillimum. Formerly Dendrobium speciosum var. nitidum)
- Dendrobium niveopurpureum
- Dendrobium njongense
- Dendrobium nobile – Noble Dendrobium
- Dendrobium normale
- Dendrobium nothofageti
- Dendrobium nothofagicola – Nothofagus Dendrobium
- Dendrobium nubigenum
- Dendrobium nudum – Naked Dendrobium
- Dendrobium numaldeorii : Himalaya
- Dendrobium nummularia
- Dendrobium nutans
- Dendrobium nycteridoglossum
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