Triolena is a genus of flowering plants in the family Melastomataceae. They are found in southern Mexico southward to Bolivia. As of 1991 there were 20 to 25 species.

Species include:

• Triolena allardii (Wurdack) Wurdack
• Triolena amazonica (Pilg.) Wurdack
• Triolena asplundii Wurdack
• Triolena barbeyana Cogn.
• Triolena calciphila (Standl. & Steyerm.) Standl. & L.O. Williams
• Triolena campii (Wurdack) Wurdack
• Triolena dressleri Wurdack
• Triolena hirsuta (Benth.) Triana
• Triolena hygrophylla (Naudin) L.O. Williams
• Triolena izabalensis Standl. & Steyerm.
• Triolena obliqua (Triana) Wurdack
• Triolena paleolata Donn. Sm.
• Triolena pedemontana Wurdack
• Triolena pileoides (Triana) Wurdack
• Triolena pluvialis (Wurdack) Wurdack
• Triolena pumila Umaña & Almeda
• Triolena pustulata Triana
• Triolena scorpioides Naudin
• Triolena spicata (Triana) L.O. Williams
• Triolena stenophylla (Standl. & Steyerm.) Standl. & L.O. Williams

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