- Dendrobium faciferum
- Dendrobium fairchildiae – Fairchild's Dendrobium
- Dendrobium fairchildae var. Alba
- Dendrobium falcatum
- Dendrobium falcipetalum
- Dendrobium falconeri – Falconer's dendrobium
- Dendrobium falcorostrum – Beech Orchid, Falcon's Beak Dendrobium
- Dendrobium fanjingshanense
- Dendrobium farinatum : Vietnam
- Dendrobium farmeri – Farmer's dendrobium
- Dendrobium fellowsii
- Dendrobium ferdinandii
- Dendrobium filicaule
- Dendrobium fimbriatum – Fringe-lipped Dendrobium
- Dendrobium fimbrilabium
- Dendrobium findleyanum – Findlay's dendrobium
- Dendrobium finetianum
- Dendrobium finisterrae – End-of-the-World Orchid, End-of-the-World Dendrobium: Papua New Guinea
- Dendrobium finniganense
- Dendrobium fissum
- Dendrobium flagellum
- Dendrobium flammula
- Dendrobium fleckeri – Flecker's Dendrobium
- Dendrobium × fleischeri
- Dendrobium flexicaule
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- Dendrobium flexile
- Dendrobium floridanum
- Dendrobium × foederatum
- Dendrobium foelschei (formerly D. canaliculatum var. foelschei)
- Dendrobium foetens
- Dendrobium forbesii – Forbes' Dendrobium
- Dendrobium forbesii var. forbesii
- Dendrobium forbesii var. praestans
- Dendrobium formosum – Beautiful giant-flowered dendrobium
- Dendrobium foxii
- Dendrobium fractiflexum
- Dendrobium fractum
- Dendrobium fragilis
- Dendrobium friedricksianum – Friedericks' Dendrobium
- Dendrobium fruticicola
- Dendrobium fuerstenbergianum
- Dendrobium fulgescens
- Dendrobium fulgidum – Shiny Dendrobium
- Dendrobium fuligineum
- Dendrobium fuliginosum
- Dendrobium fulminicaule
- Dendrobium furcatopedicellatum
- Dendrobium furcatum
- Dendrobium furfuriferum
- Dendrobium fusciflorum
- Dendrobium fytchianum – Fytch's Dendrobium
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