Yridian
- Appearance: Mammalian
- Generally hairless scalps
- Medial ridge from rear of scalp to bottom of chin
- Wrinkled skin
- Large, broad ears
- Homeworld: Yridia I
- Believed extinct some point after 22nd century; rediscovered by Federation mid-24th century (VOY: "Equinox")
- Generally noted as information brokers
- Citations
- TNG: "Birthright, Part I"
- TNG: "Gambit, Part I"
- VOY: "Non Sequitur"
- SCE Short Story: "War Stories, Part 1"
- Cultural notes